taxonID	type	format	identifier	references	title	description	created	creator	contributor	publisher	audience	source	license	rightsHolder	datasetID
03AE4066FFB6D45C1772FC84FEEAFE43.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808388/files/figure.png	https://doi.org/10.5281/zenodo.15808388	Fig. 2. Line art illustrations of Condyloderes notios sp. nov. A. Male, dorsal view. B. Male, ventral view.	Fig. 2. Line art illustrations of Condyloderes notios sp. nov. A. Male, dorsal view. B. Male, ventral view.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
03AE4066FFB6D45C1772FC84FEEAFE43.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808390/files/figure.png	https://doi.org/10.5281/zenodo.15808390	Fig. 3. Light micrographs showing overviews and details in male holotype (NHMD 1784659) of Condyloderes notios sp. nov. A. Ventral overview. B. Segments 1 to 6, dorsal view. C. Segments 1 to 6, ventral view. D. Segments 6 to 10, dorsal view. E. Segments 6 to 10, ventral view. F. Segments 9 to 11, dorsal view. G. Segments 8 to 11, focused inside specimen. H. Segments 8 to 11, ventral view. Scale bars: A = 100 µm; B–H = 25 µm.	Fig. 3. Light micrographs showing overviews and details in male holotype (NHMD 1784659) of Condyloderes notios sp. nov. A. Ventral overview. B. Segments 1 to 6, dorsal view. C. Segments 1 to 6, ventral view. D. Segments 6 to 10, dorsal view. E. Segments 6 to 10, ventral view. F. Segments 9 to 11, dorsal view. G. Segments 8 to 11, focused inside specimen. H. Segments 8 to 11, ventral view. Scale bars: A = 100 µm; B–H = 25 µm.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
03AE4066FFB6D45C1772FC84FEEAFE43.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808392/files/figure.png	https://doi.org/10.5281/zenodo.15808392	Fig. 4. Scanning electron micrographs showing overviews and details of male Condyloderes notios sp. nov. A. Right lateral overview. B. Ventral overview. C. Partly retracted introvert focused on midventral sector 1. D. Close-up of neck region, showing midventral and ventromedial placids. E. Segments 1 to 4, dorsal view; note that the paradorsal cuspidate spine broke off in this specimen. F. Segments 1 to 2, left lateral view. G. Segments 1 to 2, ventral view. H. Segments 4 to 7, dorsal view. I. Segments 5 to 6, left lateral view. J. Segments 5 to 6, ventral view. K. Segments 7 to 9, dorsal view. L. Segments 7 to 8, left lateral view. M. Segments 7 to 8, ventral view. N. Segments 9 to 11, dorsal view. O. Segments 9 to 11, left lateral view; inset shows close-up of laterodorsal sensory spot (left) and nephridiopore (right). P. Segments 10 to 11, ventral view. Scale bars: A – B = 100 µm; C, E – P = 20 µm; D = 10 µm.	Fig. 4. Scanning electron micrographs showing overviews and details of male Condyloderes notios sp. nov. A. Right lateral overview. B. Ventral overview. C. Partly retracted introvert focused on midventral sector 1. D. Close-up of neck region, showing midventral and ventromedial placids. E. Segments 1 to 4, dorsal view; note that the paradorsal cuspidate spine broke off in this specimen. F. Segments 1 to 2, left lateral view. G. Segments 1 to 2, ventral view. H. Segments 4 to 7, dorsal view. I. Segments 5 to 6, left lateral view. J. Segments 5 to 6, ventral view. K. Segments 7 to 9, dorsal view. L. Segments 7 to 8, left lateral view. M. Segments 7 to 8, ventral view. N. Segments 9 to 11, dorsal view. O. Segments 9 to 11, left lateral view; inset shows close-up of laterodorsal sensory spot (left) and nephridiopore (right). P. Segments 10 to 11, ventral view. Scale bars: A – B = 100 µm; C, E – P = 20 µm; D = 10 µm.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
03AE4066FFB6D45C1772FC84FEEAFE43.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808386/files/figure.png	https://doi.org/10.5281/zenodo.15808386	Fig. 1. Map showing the sampling stations. A. Overview of Antarctica, with the Antarctic Peninsula framed. Previous records of Polacanthoderes martinezi Sørensen, 2008 (green dots) and P. shiraseae Yamasaki et al., 2022 (red dots) are marked. B. Antarctic Peninsula with sampling area framed. C. Sampling area with station numbers and stations indicated as yellow dots. Study sites in Andvord Bay refer to OBA – Outer Basin A; MBA – Middle Basin A; IBB – Inner Basin B. Only stations yielding adult kinorhynch specimens are included.	Fig. 1. Map showing the sampling stations. A. Overview of Antarctica, with the Antarctic Peninsula framed. Previous records of Polacanthoderes martinezi Sørensen, 2008 (green dots) and P. shiraseae Yamasaki et al., 2022 (red dots) are marked. B. Antarctic Peninsula with sampling area framed. C. Sampling area with station numbers and stations indicated as yellow dots. Study sites in Andvord Bay refer to OBA – Outer Basin A; MBA – Middle Basin A; IBB – Inner Basin B. Only stations yielding adult kinorhynch specimens are included.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
03AE4066FFAED453174AFDB9FCD7FE20.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808394/files/figure.png	https://doi.org/10.5281/zenodo.15808394	Fig. 5. Line art illustrations of Polacanthoderes grzelakae sp. nov. A. Male, dorsal view. B. Male, ventral view. C. Female, segments 10 to 11, dorsal view, with lateral terminal spines drawn to full length. D. Female, segments 6 to 7, ventral view.	Fig. 5. Line art illustrations of Polacanthoderes grzelakae sp. nov. A. Male, dorsal view. B. Male, ventral view. C. Female, segments 10 to 11, dorsal view, with lateral terminal spines drawn to full length. D. Female, segments 6 to 7, ventral view.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
03AE4066FFAED453174AFDB9FCD7FE20.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808400/files/figure.png	https://doi.org/10.5281/zenodo.15808400	Fig. 6. Diagram of mouth cone (grey area), introvert, and placids in Polacanthoderes grzelakae sp. nov., showing distribution of inner oral styles (closed dots), outer oral styles, scalids, and trichoscalids. Table shows the scalid arrangement by sector (S1 to S10); single-lined boxes mark quincunxes, double-lined boxes mark “double diamonds”.	Fig. 6. Diagram of mouth cone (grey area), introvert, and placids in Polacanthoderes grzelakae sp. nov., showing distribution of inner oral styles (closed dots), outer oral styles, scalids, and trichoscalids. Table shows the scalid arrangement by sector (S1 to S10); single-lined boxes mark quincunxes, double-lined boxes mark “double diamonds”.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
03AE4066FFAED453174AFDB9FCD7FE20.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808403/files/figure.png	https://doi.org/10.5281/zenodo.15808403	Fig. 7. Light micrographs showing overviews and details of Polacanthoderes grzelakae sp. nov. A–G, I–J, L–M. Male, holotype (NHMD 1784249). H, K. Female, paratype (NHMD 1784284). A. Ventral overview. B. Segments 1 to 3, dorsal view. C. Segments 1 to 3, ventral view. D. Segments 5 to 6, dorsal view. E. Segments 5 to 6, ventral view. F. Segments 7 to 8, dorsal view. G. Segments 7 to 8, ventral view. H. Tergal plates on segments 6 to 7, showing female sexual dimorphism. I. Segments 9 to 10, dorsal view. J. Segments 8 to 9, ventral view. K. Segments 10 to 11, ventral view, showing female sexual dimorphism. L. Segment 11, dorsal view, showing male sexual dimorphism. M. Segment 11, ventral view, showing male sexual dimorphism. Scale bars: A = 100 µm; B–M = 25 µm.	Fig. 7. Light micrographs showing overviews and details of Polacanthoderes grzelakae sp. nov. A–G, I–J, L–M. Male, holotype (NHMD 1784249). H, K. Female, paratype (NHMD 1784284). A. Ventral overview. B. Segments 1 to 3, dorsal view. C. Segments 1 to 3, ventral view. D. Segments 5 to 6, dorsal view. E. Segments 5 to 6, ventral view. F. Segments 7 to 8, dorsal view. G. Segments 7 to 8, ventral view. H. Tergal plates on segments 6 to 7, showing female sexual dimorphism. I. Segments 9 to 10, dorsal view. J. Segments 8 to 9, ventral view. K. Segments 10 to 11, ventral view, showing female sexual dimorphism. L. Segment 11, dorsal view, showing male sexual dimorphism. M. Segment 11, ventral view, showing male sexual dimorphism. Scale bars: A = 100 µm; B–M = 25 µm.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
03AE4066FFAED453174AFDB9FCD7FE20.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808405/files/figure.png	https://doi.org/10.5281/zenodo.15808405	Fig. 8. Scanning electron micrographs showing overviews and details of Polacanthoderes grzelakae sp. nov.A. Introvert focused on the middorsal sector 6.B. Lateroventral overview of female.C. Segments 1 to 2, right lateral view. D. Segments 1 to 3, ventrolateral view. E. Segments 3 to 5, subdorsal view. F. Segments 4 to 6, right lateral view. G. Segments 8 to 9, ventrolateral view. H. Segments 8 to 9, subdorsal view. I. Segments 6 to 8, right lateral view. J. Segments 10 to 11, right lateral view, showing male sexual dimorphism. K. Segments 10 to 11, dorsocaudal view, showing female sexual dimorphism. Scale bars: A, C–K = 20 µm; B = 100 µm.	Fig. 8. Scanning electron micrographs showing overviews and details of Polacanthoderes grzelakae sp. nov.A. Introvert focused on the middorsal sector 6.B. Lateroventral overview of female.C. Segments 1 to 2, right lateral view. D. Segments 1 to 3, ventrolateral view. E. Segments 3 to 5, subdorsal view. F. Segments 4 to 6, right lateral view. G. Segments 8 to 9, ventrolateral view. H. Segments 8 to 9, subdorsal view. I. Segments 6 to 8, right lateral view. J. Segments 10 to 11, right lateral view, showing male sexual dimorphism. K. Segments 10 to 11, dorsocaudal view, showing female sexual dimorphism. Scale bars: A, C–K = 20 µm; B = 100 µm.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
03AE4066FFAED453174AFDB9FCD7FE20.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808386/files/figure.png	https://doi.org/10.5281/zenodo.15808386	Fig. 1. Map showing the sampling stations. A. Overview of Antarctica, with the Antarctic Peninsula framed. Previous records of Polacanthoderes martinezi Sørensen, 2008 (green dots) and P. shiraseae Yamasaki et al., 2022 (red dots) are marked. B. Antarctic Peninsula with sampling area framed. C. Sampling area with station numbers and stations indicated as yellow dots. Study sites in Andvord Bay refer to OBA – Outer Basin A; MBA – Middle Basin A; IBB – Inner Basin B. Only stations yielding adult kinorhynch specimens are included.	Fig. 1. Map showing the sampling stations. A. Overview of Antarctica, with the Antarctic Peninsula framed. Previous records of Polacanthoderes martinezi Sørensen, 2008 (green dots) and P. shiraseae Yamasaki et al., 2022 (red dots) are marked. B. Antarctic Peninsula with sampling area framed. C. Sampling area with station numbers and stations indicated as yellow dots. Study sites in Andvord Bay refer to OBA – Outer Basin A; MBA – Middle Basin A; IBB – Inner Basin B. Only stations yielding adult kinorhynch specimens are included.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
03AE4066FFA1D45314F6FDCEFE86FAB6.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808386/files/figure.png	https://doi.org/10.5281/zenodo.15808386	Fig. 1. Map showing the sampling stations. A. Overview of Antarctica, with the Antarctic Peninsula framed. Previous records of Polacanthoderes martinezi Sørensen, 2008 (green dots) and P. shiraseae Yamasaki et al., 2022 (red dots) are marked. B. Antarctic Peninsula with sampling area framed. C. Sampling area with station numbers and stations indicated as yellow dots. Study sites in Andvord Bay refer to OBA – Outer Basin A; MBA – Middle Basin A; IBB – Inner Basin B. Only stations yielding adult kinorhynch specimens are included.	Fig. 1. Map showing the sampling stations. A. Overview of Antarctica, with the Antarctic Peninsula framed. Previous records of Polacanthoderes martinezi Sørensen, 2008 (green dots) and P. shiraseae Yamasaki et al., 2022 (red dots) are marked. B. Antarctic Peninsula with sampling area framed. C. Sampling area with station numbers and stations indicated as yellow dots. Study sites in Andvord Bay refer to OBA – Outer Basin A; MBA – Middle Basin A; IBB – Inner Basin B. Only stations yielding adult kinorhynch specimens are included.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
03AE4066FFA1D4521796FA5DFA8DFE87.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808386/files/figure.png	https://doi.org/10.5281/zenodo.15808386	Fig. 1. Map showing the sampling stations. A. Overview of Antarctica, with the Antarctic Peninsula framed. Previous records of Polacanthoderes martinezi Sørensen, 2008 (green dots) and P. shiraseae Yamasaki et al., 2022 (red dots) are marked. B. Antarctic Peninsula with sampling area framed. C. Sampling area with station numbers and stations indicated as yellow dots. Study sites in Andvord Bay refer to OBA – Outer Basin A; MBA – Middle Basin A; IBB – Inner Basin B. Only stations yielding adult kinorhynch specimens are included.	Fig. 1. Map showing the sampling stations. A. Overview of Antarctica, with the Antarctic Peninsula framed. Previous records of Polacanthoderes martinezi Sørensen, 2008 (green dots) and P. shiraseae Yamasaki et al., 2022 (red dots) are marked. B. Antarctic Peninsula with sampling area framed. C. Sampling area with station numbers and stations indicated as yellow dots. Study sites in Andvord Bay refer to OBA – Outer Basin A; MBA – Middle Basin A; IBB – Inner Basin B. Only stations yielding adult kinorhynch specimens are included.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
03AE4066FFA0D4521796FE6DFD75FC3F.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808386/files/figure.png	https://doi.org/10.5281/zenodo.15808386	Fig. 1. Map showing the sampling stations. A. Overview of Antarctica, with the Antarctic Peninsula framed. Previous records of Polacanthoderes martinezi Sørensen, 2008 (green dots) and P. shiraseae Yamasaki et al., 2022 (red dots) are marked. B. Antarctic Peninsula with sampling area framed. C. Sampling area with station numbers and stations indicated as yellow dots. Study sites in Andvord Bay refer to OBA – Outer Basin A; MBA – Middle Basin A; IBB – Inner Basin B. Only stations yielding adult kinorhynch specimens are included.	Fig. 1. Map showing the sampling stations. A. Overview of Antarctica, with the Antarctic Peninsula framed. Previous records of Polacanthoderes martinezi Sørensen, 2008 (green dots) and P. shiraseae Yamasaki et al., 2022 (red dots) are marked. B. Antarctic Peninsula with sampling area framed. C. Sampling area with station numbers and stations indicated as yellow dots. Study sites in Andvord Bay refer to OBA – Outer Basin A; MBA – Middle Basin A; IBB – Inner Basin B. Only stations yielding adult kinorhynch specimens are included.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
03AE4066FFA2D4661767FB41FC81F851.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808407/files/figure.png	https://doi.org/10.5281/zenodo.15808407	Fig. 9. Line art illustrations of Echinoderes ahlfeldae sp. nov. A. Female, dorsal view. B. Female, ventral view. C. Male, segments 10 to 11, dorsal view. D. Male, segments 10 to 11, ventral view.	Fig. 9. Line art illustrations of Echinoderes ahlfeldae sp. nov. A. Female, dorsal view. B. Female, ventral view. C. Male, segments 10 to 11, dorsal view. D. Male, segments 10 to 11, ventral view.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
03AE4066FFA2D4661767FB41FC81F851.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808409/files/figure.png	https://doi.org/10.5281/zenodo.15808409	Fig. 10. Diagram of mouth cone (grey area), introvert, and placids in Echinoderes ahlfeldae sp. nov., showing distribution of inner oral styles (closed dots,) outer oral styles, scalids, and trichoscalids. Table shows the scalid arrangement by sector (S1 to S10); single-lined boxes mark quincunxes, double-lined boxes mark “double diamonds”.	Fig. 10. Diagram of mouth cone (grey area), introvert, and placids in Echinoderes ahlfeldae sp. nov., showing distribution of inner oral styles (closed dots,) outer oral styles, scalids, and trichoscalids. Table shows the scalid arrangement by sector (S1 to S10); single-lined boxes mark quincunxes, double-lined boxes mark “double diamonds”.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
03AE4066FFA2D4661767FB41FC81F851.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808411/files/figure.png	https://doi.org/10.5281/zenodo.15808411	Fig. 11. Light micrographs showing overviews and details of Echinoderes ahlfeldae sp. nov. A–E, J–K. Female, holotype (NHMD 1784759). F. Male, paratype (NHMD 1784764). G. Female, paratype (NHMD 1784760). H. Male paratype (NHMD 1784768). I. Male paratype (NHMD 1784775). A. Ventral overview. B. Segments 1 to 6, dorsal view. C. Segments 1 to 6, ventral view. D. Segments 7 to 10, dorsal view. E. Segments 6 to 10, ventral view. F. Segment 10, ventral view, showing male sexual dimorphism. G. Segments 8 to 9, ventral view. H. Segments 9 to 10, ventral view, showing male sexual dimorphism. I. Segments 10 to 11, ventral view, showing male sexual dimorphism. J. Segments 10 to 11, focused on tergal extensions, showing female sexual dimorphism. K. Segments 10 to 11, ventral view, showing female sexual dimorphism. Scale bars: A = 100 µm; B–E = 25 µm; F–K = 20 µm.	Fig. 11. Light micrographs showing overviews and details of Echinoderes ahlfeldae sp. nov. A–E, J–K. Female, holotype (NHMD 1784759). F. Male, paratype (NHMD 1784764). G. Female, paratype (NHMD 1784760). H. Male paratype (NHMD 1784768). I. Male paratype (NHMD 1784775). A. Ventral overview. B. Segments 1 to 6, dorsal view. C. Segments 1 to 6, ventral view. D. Segments 7 to 10, dorsal view. E. Segments 6 to 10, ventral view. F. Segment 10, ventral view, showing male sexual dimorphism. G. Segments 8 to 9, ventral view. H. Segments 9 to 10, ventral view, showing male sexual dimorphism. I. Segments 10 to 11, ventral view, showing male sexual dimorphism. J. Segments 10 to 11, focused on tergal extensions, showing female sexual dimorphism. K. Segments 10 to 11, ventral view, showing female sexual dimorphism. Scale bars: A = 100 µm; B–E = 25 µm; F–K = 20 µm.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
03AE4066FFA2D4661767FB41FC81F851.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808414/files/figure.png	https://doi.org/10.5281/zenodo.15808414	Fig. 12. Scanning electron micrographs showing overviews and details of Echinoderes ahlfeldae sp. nov. A. Dorsal overview of female. B. Ventrolateral overview of male. C. Mouth cone, ventral view. D. Introvert focused on the midventral sector 1 and sector 10. E. Segments 1 to 5, dorsal view. F. Segments 1 to 2, ventral view. G. Segments 1 to 2, right lateral view. H. Segments 8 to 9, right lateral view. I. Segments 7 to 8, ventral view. J. Segments 7 to 8, right lateral view. K. Detail of sternal plates of segment 10 with male dimorphic flare-like extensions from the secondary fringe. L. Segments 10 to 11, ventral view, showing male sexual dimorphism. M. Segments 10 to 11, right lateral view, showing male sexual dimorphism. N. Segments 10 to 11, dorsal view, showing female sexual dimorphism. Scale bars: A–B = 100 µm; C–G, I–J, L–M = 20 µm; H, N = 10 µm; K = 5 µm.	Fig. 12. Scanning electron micrographs showing overviews and details of Echinoderes ahlfeldae sp. nov. A. Dorsal overview of female. B. Ventrolateral overview of male. C. Mouth cone, ventral view. D. Introvert focused on the midventral sector 1 and sector 10. E. Segments 1 to 5, dorsal view. F. Segments 1 to 2, ventral view. G. Segments 1 to 2, right lateral view. H. Segments 8 to 9, right lateral view. I. Segments 7 to 8, ventral view. J. Segments 7 to 8, right lateral view. K. Detail of sternal plates of segment 10 with male dimorphic flare-like extensions from the secondary fringe. L. Segments 10 to 11, ventral view, showing male sexual dimorphism. M. Segments 10 to 11, right lateral view, showing male sexual dimorphism. N. Segments 10 to 11, dorsal view, showing female sexual dimorphism. Scale bars: A–B = 100 µm; C–G, I–J, L–M = 20 µm; H, N = 10 µm; K = 5 µm.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
03AE4066FFA2D4661767FB41FC81F851.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808386/files/figure.png	https://doi.org/10.5281/zenodo.15808386	Fig. 1. Map showing the sampling stations. A. Overview of Antarctica, with the Antarctic Peninsula framed. Previous records of Polacanthoderes martinezi Sørensen, 2008 (green dots) and P. shiraseae Yamasaki et al., 2022 (red dots) are marked. B. Antarctic Peninsula with sampling area framed. C. Sampling area with station numbers and stations indicated as yellow dots. Study sites in Andvord Bay refer to OBA – Outer Basin A; MBA – Middle Basin A; IBB – Inner Basin B. Only stations yielding adult kinorhynch specimens are included.	Fig. 1. Map showing the sampling stations. A. Overview of Antarctica, with the Antarctic Peninsula framed. Previous records of Polacanthoderes martinezi Sørensen, 2008 (green dots) and P. shiraseae Yamasaki et al., 2022 (red dots) are marked. B. Antarctic Peninsula with sampling area framed. C. Sampling area with station numbers and stations indicated as yellow dots. Study sites in Andvord Bay refer to OBA – Outer Basin A; MBA – Middle Basin A; IBB – Inner Basin B. Only stations yielding adult kinorhynch specimens are included.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
03AE4066FF97D47D1768FED7FE1FFA98.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808418/files/figure.png	https://doi.org/10.5281/zenodo.15808418	Fig. 13. Line art illustrations of Echinoderes nataliae sp. nov. A. Female, dorsal view. B. Female, ventral view. C. Male, segments 10 to 11, dorsal view. D. Male, segments 10 to 11, ventral view.	Fig. 13. Line art illustrations of Echinoderes nataliae sp. nov. A. Female, dorsal view. B. Female, ventral view. C. Male, segments 10 to 11, dorsal view. D. Male, segments 10 to 11, ventral view.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
03AE4066FF97D47D1768FED7FE1FFA98.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808420/files/figure.png	https://doi.org/10.5281/zenodo.15808420	Fig. 14. Light micrographs showing overviews and details of Echinoderes nataliae sp. nov. A–E, J–K. Male, holotype (NHMD 1786668). F. Female, paratype (NHMD 1786671). G. Male, paratype (NHMD 1786669). H. Female, paratype (USNM 1740038). I. Female, paratype (NHMD 1786674). A. Ventral overview. B. Segments 1 to 6, dorsal view. C. Segments 1 to 6, ventral view. D. Segments 7 to 9, dorsal view. E. Segments 7 to 9, ventral view. F. Detail showing lateral half of segment 8, ventral view. G. Segments 9, lateral view, ventral is left. H. Segment 9, focused inside specimen. I. Segments 10 to 11, ventral view, showing female sexual dimorphism. J. Segments 10 to 11, focused on tergal extensions, showing male sexual dimorphism. K. Segments 10 to 11, ventral view, showing male sexual dimorphism. Scale bars: A = 100 µm; B–E, G–K = 20 µm; F = 10 µm.	Fig. 14. Light micrographs showing overviews and details of Echinoderes nataliae sp. nov. A–E, J–K. Male, holotype (NHMD 1786668). F. Female, paratype (NHMD 1786671). G. Male, paratype (NHMD 1786669). H. Female, paratype (USNM 1740038). I. Female, paratype (NHMD 1786674). A. Ventral overview. B. Segments 1 to 6, dorsal view. C. Segments 1 to 6, ventral view. D. Segments 7 to 9, dorsal view. E. Segments 7 to 9, ventral view. F. Detail showing lateral half of segment 8, ventral view. G. Segments 9, lateral view, ventral is left. H. Segment 9, focused inside specimen. I. Segments 10 to 11, ventral view, showing female sexual dimorphism. J. Segments 10 to 11, focused on tergal extensions, showing male sexual dimorphism. K. Segments 10 to 11, ventral view, showing male sexual dimorphism. Scale bars: A = 100 µm; B–E, G–K = 20 µm; F = 10 µm.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
03AE4066FF97D47D1768FED7FE1FFA98.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808422/files/figure.png	https://doi.org/10.5281/zenodo.15808422	Fig. 15. Scanning electron micrographs showing overviews and details of Echinoderes nataliae sp. nov. A. Laterodorsal overview of female. B. Ventral overview of male. C. Mouth cone, ventral view. D. Introvert focused on sectors 10 (left) and 9 (right). E. Segments 1 to 2, dorsal view. F. Segments 1 to 2, right lateral view. G. Segments 1 to 2, ventral view. H. Segments 3 to 4, laterodorsal view. I. Segments 5 to 6, right lateral view. J. Segments 3 to 5, ventral view. K. Segment 8, dorsal view, inset shows close-up of laterodorsal sensory spot and glandular cell outlet type 2 with protruding flap; scale = 3 µm. L. Segments 8 to 9, right lateral view. M. Segments 8 to 9, ventral view. N. Segments 10 to 11, dorsal view, showing male sexual dimorphism. O. Segments 10 to 11, ventral view, showing male sexual dimorphism. P. Segments 10 to 11, ventral view, showing female sexual dimorphism. Scale bars: A = 100 µm; B = 50 µm; C–D, J, L–P = 10 µm; E–I, K = 20 µm.	Fig. 15. Scanning electron micrographs showing overviews and details of Echinoderes nataliae sp. nov. A. Laterodorsal overview of female. B. Ventral overview of male. C. Mouth cone, ventral view. D. Introvert focused on sectors 10 (left) and 9 (right). E. Segments 1 to 2, dorsal view. F. Segments 1 to 2, right lateral view. G. Segments 1 to 2, ventral view. H. Segments 3 to 4, laterodorsal view. I. Segments 5 to 6, right lateral view. J. Segments 3 to 5, ventral view. K. Segment 8, dorsal view, inset shows close-up of laterodorsal sensory spot and glandular cell outlet type 2 with protruding flap; scale = 3 µm. L. Segments 8 to 9, right lateral view. M. Segments 8 to 9, ventral view. N. Segments 10 to 11, dorsal view, showing male sexual dimorphism. O. Segments 10 to 11, ventral view, showing male sexual dimorphism. P. Segments 10 to 11, ventral view, showing female sexual dimorphism. Scale bars: A = 100 µm; B = 50 µm; C–D, J, L–P = 10 µm; E–I, K = 20 µm.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
03AE4066FF97D47D1768FED7FE1FFA98.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808400/files/figure.png	https://doi.org/10.5281/zenodo.15808400	Fig. 6. Diagram of mouth cone (grey area), introvert, and placids in Polacanthoderes grzelakae sp. nov., showing distribution of inner oral styles (closed dots), outer oral styles, scalids, and trichoscalids. Table shows the scalid arrangement by sector (S1 to S10); single-lined boxes mark quincunxes, double-lined boxes mark “double diamonds”.	Fig. 6. Diagram of mouth cone (grey area), introvert, and placids in Polacanthoderes grzelakae sp. nov., showing distribution of inner oral styles (closed dots), outer oral styles, scalids, and trichoscalids. Table shows the scalid arrangement by sector (S1 to S10); single-lined boxes mark quincunxes, double-lined boxes mark “double diamonds”.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
03AE4066FF97D47D1768FED7FE1FFA98.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808386/files/figure.png	https://doi.org/10.5281/zenodo.15808386	Fig. 1. Map showing the sampling stations. A. Overview of Antarctica, with the Antarctic Peninsula framed. Previous records of Polacanthoderes martinezi Sørensen, 2008 (green dots) and P. shiraseae Yamasaki et al., 2022 (red dots) are marked. B. Antarctic Peninsula with sampling area framed. C. Sampling area with station numbers and stations indicated as yellow dots. Study sites in Andvord Bay refer to OBA – Outer Basin A; MBA – Middle Basin A; IBB – Inner Basin B. Only stations yielding adult kinorhynch specimens are included.	Fig. 1. Map showing the sampling stations. A. Overview of Antarctica, with the Antarctic Peninsula framed. Previous records of Polacanthoderes martinezi Sørensen, 2008 (green dots) and P. shiraseae Yamasaki et al., 2022 (red dots) are marked. B. Antarctic Peninsula with sampling area framed. C. Sampling area with station numbers and stations indicated as yellow dots. Study sites in Andvord Bay refer to OBA – Outer Basin A; MBA – Middle Basin A; IBB – Inner Basin B. Only stations yielding adult kinorhynch specimens are included.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
03AE4066FF8FD476173BFA6FFBD1FCF5.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808424/files/figure.png	https://doi.org/10.5281/zenodo.15808424	Fig. 16. Line art illustrations of Echinoderes kathleenhannae sp. nov. A. Male, dorsal view. B. Male, ventral view. C. Female, segments 10 to 11, dorsal view. D. Female, segments 10 to 11, ventral view.	Fig. 16. Line art illustrations of Echinoderes kathleenhannae sp. nov. A. Male, dorsal view. B. Male, ventral view. C. Female, segments 10 to 11, dorsal view. D. Female, segments 10 to 11, ventral view.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
03AE4066FF8FD476173BFA6FFBD1FCF5.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808426/files/figure.png	https://doi.org/10.5281/zenodo.15808426	Fig. 17. Light micrographs showing overviews and details of Echinoderes kathleenhannae sp. nov., male, holotype (NHMD 1786779). A. Ventral overview. B. Segments 1 to 3, dorsal view. C. Segments 1 to 3, ventral view. D. Segments 4 to 6, dorsal view. E. Segments 4 to 6, ventral view. F. Segments 7 to 8, dorsal view. G. Segments 7 to 8, ventral view. H. Segments 8 to 9, focused on laterodorsal tube on segment 8. I. Segments 8 to 9, dorsal view. J. Segments 8 (posterior part) to 10. K. Segments 9 to 10, dorsal view. L. Segments 10 to 11, focused on tergal extensions, showing male sexual dimorphism. M. Segments 10 to 11, ventral view, showing male sexual dimorphism. Scale bars: A = 100 µm; B–M = 20 µm.	Fig. 17. Light micrographs showing overviews and details of Echinoderes kathleenhannae sp. nov., male, holotype (NHMD 1786779). A. Ventral overview. B. Segments 1 to 3, dorsal view. C. Segments 1 to 3, ventral view. D. Segments 4 to 6, dorsal view. E. Segments 4 to 6, ventral view. F. Segments 7 to 8, dorsal view. G. Segments 7 to 8, ventral view. H. Segments 8 to 9, focused on laterodorsal tube on segment 8. I. Segments 8 to 9, dorsal view. J. Segments 8 (posterior part) to 10. K. Segments 9 to 10, dorsal view. L. Segments 10 to 11, focused on tergal extensions, showing male sexual dimorphism. M. Segments 10 to 11, ventral view, showing male sexual dimorphism. Scale bars: A = 100 µm; B–M = 20 µm.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
03AE4066FF8FD476173BFA6FFBD1FCF5.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808430/files/figure.png	https://doi.org/10.5281/zenodo.15808430	Fig. 18. Scanning electron micrographs showing overviews and details of Echinoderes kathleenhannae sp. nov. A. Dorsal overview of male. B. Left lateral overview of female. C. Ventral overview of female. D. Segments 1 to 2, dorsal view. E. Segments 1 to 2, left lateral view. F. Segments 1 to 2, ventral view. G. Segments 5 to 6, dorsal view. H. Segments 5 to 6, left lateral view. I. Segments 5 to 6, ventral view. J. Segments 8 to 9, laterodorsal view. K. Segments 8 to 9, left lateral view. L. Segments 7 to 8, ventral view. M. Segments 10 to 11, dorsal view, showing female sexual dimorphism. N. Segments 10 to 11, left lateral view, showing male sexual dimorphism. O. Segments 10 to 11, ventral view, showing female sexual dimorphism. Scale bars: A–C = 100 µm; D–J, L = 20 µm; K, M–O = 10 µm.	Fig. 18. Scanning electron micrographs showing overviews and details of Echinoderes kathleenhannae sp. nov. A. Dorsal overview of male. B. Left lateral overview of female. C. Ventral overview of female. D. Segments 1 to 2, dorsal view. E. Segments 1 to 2, left lateral view. F. Segments 1 to 2, ventral view. G. Segments 5 to 6, dorsal view. H. Segments 5 to 6, left lateral view. I. Segments 5 to 6, ventral view. J. Segments 8 to 9, laterodorsal view. K. Segments 8 to 9, left lateral view. L. Segments 7 to 8, ventral view. M. Segments 10 to 11, dorsal view, showing female sexual dimorphism. N. Segments 10 to 11, left lateral view, showing male sexual dimorphism. O. Segments 10 to 11, ventral view, showing female sexual dimorphism. Scale bars: A–C = 100 µm; D–J, L = 20 µm; K, M–O = 10 µm.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
03AE4066FF8FD476173BFA6FFBD1FCF5.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808386/files/figure.png	https://doi.org/10.5281/zenodo.15808386	Fig. 1. Map showing the sampling stations. A. Overview of Antarctica, with the Antarctic Peninsula framed. Previous records of Polacanthoderes martinezi Sørensen, 2008 (green dots) and P. shiraseae Yamasaki et al., 2022 (red dots) are marked. B. Antarctic Peninsula with sampling area framed. C. Sampling area with station numbers and stations indicated as yellow dots. Study sites in Andvord Bay refer to OBA – Outer Basin A; MBA – Middle Basin A; IBB – Inner Basin B. Only stations yielding adult kinorhynch specimens are included.	Fig. 1. Map showing the sampling stations. A. Overview of Antarctica, with the Antarctic Peninsula framed. Previous records of Polacanthoderes martinezi Sørensen, 2008 (green dots) and P. shiraseae Yamasaki et al., 2022 (red dots) are marked. B. Antarctic Peninsula with sampling area framed. C. Sampling area with station numbers and stations indicated as yellow dots. Study sites in Andvord Bay refer to OBA – Outer Basin A; MBA – Middle Basin A; IBB – Inner Basin B. Only stations yielding adult kinorhynch specimens are included.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
03AE4066FF84D40F1755FC9CFB87F878.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808434/files/figure.png	https://doi.org/10.5281/zenodo.15808434	Fig. 19. Line art illustrations of Echinoderes antarcticus sp. nov. A. Female, dorsal view. B. Female, ventral view.	Fig. 19. Line art illustrations of Echinoderes antarcticus sp. nov. A. Female, dorsal view. B. Female, ventral view.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
03AE4066FF84D40F1755FC9CFB87F878.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808438/files/figure.png	https://doi.org/10.5281/zenodo.15808438	Fig. 20. Light micrographs showing overviews and details of Echinoderes antarcticus sp. nov., female, holotype (NHMD 1786932). A. Dorsal overview. B. Segments 1 to 4, dorsal view. C. Segments 1 to 4, ventral view. D. Segments 5 to 7, dorsal view. E. Segments 5 to 7, ventral view. F. Segments 8 to 10, dorsal view. G. Segments 8 to 10, ventral view. H. Detail showing lateroventral positions on segments 8 to 9. I. Segments 10 (posterior part) to 11, dorsal view. J. Segments 9 to 11, dorsal view. K. Segments 9 to 11, ventral view. Scale bars: A = 50 µm; B–K = 20 µm.	Fig. 20. Light micrographs showing overviews and details of Echinoderes antarcticus sp. nov., female, holotype (NHMD 1786932). A. Dorsal overview. B. Segments 1 to 4, dorsal view. C. Segments 1 to 4, ventral view. D. Segments 5 to 7, dorsal view. E. Segments 5 to 7, ventral view. F. Segments 8 to 10, dorsal view. G. Segments 8 to 10, ventral view. H. Detail showing lateroventral positions on segments 8 to 9. I. Segments 10 (posterior part) to 11, dorsal view. J. Segments 9 to 11, dorsal view. K. Segments 9 to 11, ventral view. Scale bars: A = 50 µm; B–K = 20 µm.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
03AE4066FF84D40F1755FC9CFB87F878.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808440/files/figure.png	https://doi.org/10.5281/zenodo.15808440	Fig. 21. Scanning electron micrographs showing overviews and details of femaleEchinoderes antarcticus sp. nov. A. Right lateral overview. B. Ventral overview. C. Segments 1 to 2, right laterodorsal view. D. Segments 1 to 2, ventral view. E. Segments 4 to 6, right subdorsal view. F. Segments 5 to 6, right lateral view. G. Segments 5 to 7, ventral view. H. Segments 9 to 11, right subdorsal view. I. Segments 7 to 8, right lateral view. J. Segments 10 to 11, ventral view. Scale bars: A–B = 100 µm; C–H = 20 µm; I–J = 10 µm.	Fig. 21. Scanning electron micrographs showing overviews and details of femaleEchinoderes antarcticus sp. nov. A. Right lateral overview. B. Ventral overview. C. Segments 1 to 2, right laterodorsal view. D. Segments 1 to 2, ventral view. E. Segments 4 to 6, right subdorsal view. F. Segments 5 to 6, right lateral view. G. Segments 5 to 7, ventral view. H. Segments 9 to 11, right subdorsal view. I. Segments 7 to 8, right lateral view. J. Segments 10 to 11, ventral view. Scale bars: A–B = 100 µm; C–H = 20 µm; I–J = 10 µm.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
03AE4066FF84D40F1755FC9CFB87F878.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808386/files/figure.png	https://doi.org/10.5281/zenodo.15808386	Fig. 1. Map showing the sampling stations. A. Overview of Antarctica, with the Antarctic Peninsula framed. Previous records of Polacanthoderes martinezi Sørensen, 2008 (green dots) and P. shiraseae Yamasaki et al., 2022 (red dots) are marked. B. Antarctic Peninsula with sampling area framed. C. Sampling area with station numbers and stations indicated as yellow dots. Study sites in Andvord Bay refer to OBA – Outer Basin A; MBA – Middle Basin A; IBB – Inner Basin B. Only stations yielding adult kinorhynch specimens are included.	Fig. 1. Map showing the sampling stations. A. Overview of Antarctica, with the Antarctic Peninsula framed. Previous records of Polacanthoderes martinezi Sørensen, 2008 (green dots) and P. shiraseae Yamasaki et al., 2022 (red dots) are marked. B. Antarctic Peninsula with sampling area framed. C. Sampling area with station numbers and stations indicated as yellow dots. Study sites in Andvord Bay refer to OBA – Outer Basin A; MBA – Middle Basin A; IBB – Inner Basin B. Only stations yielding adult kinorhynch specimens are included.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
03AE4066FFFCD407177DFED7FAE0FB95.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808442/files/figure.png	https://doi.org/10.5281/zenodo.15808442	Fig. 22. Line art illustrations of Echinoderes crux sp. nov. A. Female, dorsal view. B. Female, ventral view.	Fig. 22. Line art illustrations of Echinoderes crux sp. nov. A. Female, dorsal view. B. Female, ventral view.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
03AE4066FFFCD407177DFED7FAE0FB95.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808444/files/figure.png	https://doi.org/10.5281/zenodo.15808444	Fig. 23. Scanning electron micrographs showing overviews and details of anterior segments in female Echinoderes crux sp. nov. A. Female, paratype (NHMD 1790633). B–I. Female, holotype (NHMD 1790632). A. Dorsal overview. B. Right lateral overview. C. Lateroventral overview. D. Segments 1 to 2, dorsal view. E. Segments 1 to 2, right lateral view. F. Segments 1 to 2, ventrolateral view. G. Segments 3 to 4, dorsal view. H. Segments 3 to 4, right lateral view. I. Segments 3 to 4, ventral view. Scale bars: A–C = 50 µm; D–I = 10 µm.	Fig. 23. Scanning electron micrographs showing overviews and details of anterior segments in female Echinoderes crux sp. nov. A. Female, paratype (NHMD 1790633). B–I. Female, holotype (NHMD 1790632). A. Dorsal overview. B. Right lateral overview. C. Lateroventral overview. D. Segments 1 to 2, dorsal view. E. Segments 1 to 2, right lateral view. F. Segments 1 to 2, ventrolateral view. G. Segments 3 to 4, dorsal view. H. Segments 3 to 4, right lateral view. I. Segments 3 to 4, ventral view. Scale bars: A–C = 50 µm; D–I = 10 µm.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
03AE4066FFFCD407177DFED7FAE0FB95.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808446/files/figure.png	https://doi.org/10.5281/zenodo.15808446	Fig. 24. Scanning electron micrographs showing details of posterior segments in female, holotype (NHMD 1790632) of Echinoderes crux sp. nov. A. Segments 5 to 6, subdorsal view. B. Segments 5 to 6, right lateral view. C. Segments 5 to 6, ventral view. D. Segment 7, dorsal view. E. Segment 7, right lateral view. F. Segments 7 to 8, ventral view. G. Segment 8, dorsal view. H. Segment 8, right lateral view. I. Close-up showing sublateral to lateroventral details on segment 9. J. Segment 9, dorsal view. K. Segment 9, right lateral view. L. Segments 9 to 10, ventral view. M. Segments 10 to 11, dorsal view. N. Segments 10 to 11, right lateral view. O. Segments 10 to 11, ventral view. Scale bars: A–H, J–O = 10 µm; I = 5 µm.	Fig. 24. Scanning electron micrographs showing details of posterior segments in female, holotype (NHMD 1790632) of Echinoderes crux sp. nov. A. Segments 5 to 6, subdorsal view. B. Segments 5 to 6, right lateral view. C. Segments 5 to 6, ventral view. D. Segment 7, dorsal view. E. Segment 7, right lateral view. F. Segments 7 to 8, ventral view. G. Segment 8, dorsal view. H. Segment 8, right lateral view. I. Close-up showing sublateral to lateroventral details on segment 9. J. Segment 9, dorsal view. K. Segment 9, right lateral view. L. Segments 9 to 10, ventral view. M. Segments 10 to 11, dorsal view. N. Segments 10 to 11, right lateral view. O. Segments 10 to 11, ventral view. Scale bars: A–H, J–O = 10 µm; I = 5 µm.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
03AE4066FFFCD407177DFED7FAE0FB95.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808386/files/figure.png	https://doi.org/10.5281/zenodo.15808386	Fig. 1. Map showing the sampling stations. A. Overview of Antarctica, with the Antarctic Peninsula framed. Previous records of Polacanthoderes martinezi Sørensen, 2008 (green dots) and P. shiraseae Yamasaki et al., 2022 (red dots) are marked. B. Antarctic Peninsula with sampling area framed. C. Sampling area with station numbers and stations indicated as yellow dots. Study sites in Andvord Bay refer to OBA – Outer Basin A; MBA – Middle Basin A; IBB – Inner Basin B. Only stations yielding adult kinorhynch specimens are included.	Fig. 1. Map showing the sampling stations. A. Overview of Antarctica, with the Antarctic Peninsula framed. Previous records of Polacanthoderes martinezi Sørensen, 2008 (green dots) and P. shiraseae Yamasaki et al., 2022 (red dots) are marked. B. Antarctic Peninsula with sampling area framed. C. Sampling area with station numbers and stations indicated as yellow dots. Study sites in Andvord Bay refer to OBA – Outer Basin A; MBA – Middle Basin A; IBB – Inner Basin B. Only stations yielding adult kinorhynch specimens are included.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
03AE4066FFF5D40014D6FB06FB3CFDCF.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808448/files/figure.png	https://doi.org/10.5281/zenodo.15808448	Fig. 25. Comparative light micrographs showing details of Echinoderes aff. angustus Higgins & Kristensen, 1988 from the Antarctic Peninsula (first and third column from the left) and holo- and paratypes of E. angustus (second and fourth column from the left). A, C, E, G, I, K, M, O, R, T. Male Echinoderes aff. angustus (NHMD 1790692). B, D, H, J, P–Q, S. Female, holotype of E. angustus (USNM 233200). F, L, N. Female, paratype of E. angustus (NHMD 99369). U. Male, paratype of E. angustus (NHMD 99368). A–B. Segments 1 to 4, dorsal view. C–D. Segments 1 to 2, ventral view. E–F. Segment 2, ventral view, focused at intracuticular level. G–H. Segments 5 to 8, dorsal view. I–J. Segments 5 to 8, ventral view. K–L. Segment 5, focused at midlateral level. M–N. Segment 8, focused at sublateral level. O. Segments 9 to 10, dorsal view. P. Segment 9, dorsal view. Q. Segment 10, dorsal view. R–S. Segments 9 to 11, ventral view. T–U. Segment 11, focused at midtergal fissure. Scale bars: A–B, G–N, R–S = 30 µm; C–F, O–Q, T–U= 20 µm.	Fig. 25. Comparative light micrographs showing details of Echinoderes aff. angustus Higgins & Kristensen, 1988 from the Antarctic Peninsula (first and third column from the left) and holo- and paratypes of E. angustus (second and fourth column from the left). A, C, E, G, I, K, M, O, R, T. Male Echinoderes aff. angustus (NHMD 1790692). B, D, H, J, P–Q, S. Female, holotype of E. angustus (USNM 233200). F, L, N. Female, paratype of E. angustus (NHMD 99369). U. Male, paratype of E. angustus (NHMD 99368). A–B. Segments 1 to 4, dorsal view. C–D. Segments 1 to 2, ventral view. E–F. Segment 2, ventral view, focused at intracuticular level. G–H. Segments 5 to 8, dorsal view. I–J. Segments 5 to 8, ventral view. K–L. Segment 5, focused at midlateral level. M–N. Segment 8, focused at sublateral level. O. Segments 9 to 10, dorsal view. P. Segment 9, dorsal view. Q. Segment 10, dorsal view. R–S. Segments 9 to 11, ventral view. T–U. Segment 11, focused at midtergal fissure. Scale bars: A–B, G–N, R–S = 30 µm; C–F, O–Q, T–U= 20 µm.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
03AE4066FFF5D40014D6FB06FB3CFDCF.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808450/files/figure.png	https://doi.org/10.5281/zenodo.15808450	Fig. 26. Scanning electron micrographs showing overviews and details of Echinoderes aff. angustus Higgins & Kristensen, 1988. A. Segments 1 to 4, dorsal view. B. Segments 1 to 4, left lateral view. C. Segments 1 to 2, ventral view. D. Segments 3 to 4, ventral view. E. Segments 4 to 6, dorsal view. F. Segments 4 to 6, left lateral view. G. Segments 5 to 8, ventral view. H. Segments 7 to 9, ventral view. I. Segments 7 to 9, left lateral view. J. Segments 9 to 10, ventral view.K. Segments 10 to 11, dorsal view, showing female sexual dimorphism. L. Segments 10 (posterior part) to 11, left lateral view, showing male sexual dimorphism. M. Segments 10 to 11, ventral view, showing male sexual dimorphism. Scale bars: A–C, E–I = 20 µm; D, J–K, M = 10 µm; L = 5 µm.	Fig. 26. Scanning electron micrographs showing overviews and details of Echinoderes aff. angustus Higgins & Kristensen, 1988. A. Segments 1 to 4, dorsal view. B. Segments 1 to 4, left lateral view. C. Segments 1 to 2, ventral view. D. Segments 3 to 4, ventral view. E. Segments 4 to 6, dorsal view. F. Segments 4 to 6, left lateral view. G. Segments 5 to 8, ventral view. H. Segments 7 to 9, ventral view. I. Segments 7 to 9, left lateral view. J. Segments 9 to 10, ventral view.K. Segments 10 to 11, dorsal view, showing female sexual dimorphism. L. Segments 10 (posterior part) to 11, left lateral view, showing male sexual dimorphism. M. Segments 10 to 11, ventral view, showing male sexual dimorphism. Scale bars: A–C, E–I = 20 µm; D, J–K, M = 10 µm; L = 5 µm.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
03AE4066FFF5D40014D6FB06FB3CFDCF.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808386/files/figure.png	https://doi.org/10.5281/zenodo.15808386	Fig. 1. Map showing the sampling stations. A. Overview of Antarctica, with the Antarctic Peninsula framed. Previous records of Polacanthoderes martinezi Sørensen, 2008 (green dots) and P. shiraseae Yamasaki et al., 2022 (red dots) are marked. B. Antarctic Peninsula with sampling area framed. C. Sampling area with station numbers and stations indicated as yellow dots. Study sites in Andvord Bay refer to OBA – Outer Basin A; MBA – Middle Basin A; IBB – Inner Basin B. Only stations yielding adult kinorhynch specimens are included.	Fig. 1. Map showing the sampling stations. A. Overview of Antarctica, with the Antarctic Peninsula framed. Previous records of Polacanthoderes martinezi Sørensen, 2008 (green dots) and P. shiraseae Yamasaki et al., 2022 (red dots) are marked. B. Antarctic Peninsula with sampling area framed. C. Sampling area with station numbers and stations indicated as yellow dots. Study sites in Andvord Bay refer to OBA – Outer Basin A; MBA – Middle Basin A; IBB – Inner Basin B. Only stations yielding adult kinorhynch specimens are included.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
03AE4066FFF2D41614F5FDA5FE6FFCC0.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808453/files/figure.png	https://doi.org/10.5281/zenodo.15808453	Fig. 27. Light micrographs showing overviews and details of Echinoderes aff. beringiensis/romanoi/ xalkutaat. A–F, I–J. Female (NHMD 1790694). G–H. Male (NHMD 1790696). A. Ventral overview. B. Segments 1 to 6, dorsal view. C. Segments 1 to 6, ventral view. D. Segments 5 to 8, focused mid- to sublaterally. E. Segments 6 to 9, dorsal view. F. Segments 6 to 9, ventral view. G. Segments 10 to 11, dorsal view. H. Segments 9 to 11, focused slightly deeper than G, showing male sexual dimorphism. I. Segments 10 to 11, focused at tergal extensions. J. Segments 10 to 11, ventral view, showing female sexual dimorphism. Scale bars: A = 100 µm; B–F, H = 20 µm; G, I–J = 15 µm.	Fig. 27. Light micrographs showing overviews and details of Echinoderes aff. beringiensis/romanoi/ xalkutaat. A–F, I–J. Female (NHMD 1790694). G–H. Male (NHMD 1790696). A. Ventral overview. B. Segments 1 to 6, dorsal view. C. Segments 1 to 6, ventral view. D. Segments 5 to 8, focused mid- to sublaterally. E. Segments 6 to 9, dorsal view. F. Segments 6 to 9, ventral view. G. Segments 10 to 11, dorsal view. H. Segments 9 to 11, focused slightly deeper than G, showing male sexual dimorphism. I. Segments 10 to 11, focused at tergal extensions. J. Segments 10 to 11, ventral view, showing female sexual dimorphism. Scale bars: A = 100 µm; B–F, H = 20 µm; G, I–J = 15 µm.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
03AE4066FFF2D41614F5FDA5FE6FFCC0.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808455/files/figure.png	https://doi.org/10.5281/zenodo.15808455	Fig. 28. Scanning electron micrographs showing overviews and details of Echinoderes aff. beringiensis/ romanoi/xalkutaat. A. Segments 1 to 2, dorsal view. B. Segments 1 to 2, left lateral view. C. Segments 1 to 2, ventral view. D. Segments 3 to 4, dorsal view. E. Segments 3 to 4, left lateral view. F. Segments 3 to 5, ventral view. G. Segments 5 to 6, dorsal view. H. Segments 5 to 6, left lateral view. I. Segments 5 to 7, ventral view. J. Segment 7, dorsal view. K. Segment 7, left lateral view. L. Segments 7 to 8, ventral view. M. Segment 8, dorsal view. N. Segment 8, left lateral view. O. Segment 9, ventral view. P. Segment 9, dorsal view. Q. Segment 9, left lateral view. R. Segments 10 (posterior part) to 11, ventral view, showing female sexual dimorphism. S. Segments 10 to 11, dorsal view, showing male sexual dimorphism. T. Segments 10 to 11, left lateral view, showing male sexual dimorphism. U. Segments 10 (posterior part) to 11, dorsal view, showing female sexual dimorphism. All scale bars = 15 µm.	Fig. 28. Scanning electron micrographs showing overviews and details of Echinoderes aff. beringiensis/ romanoi/xalkutaat. A. Segments 1 to 2, dorsal view. B. Segments 1 to 2, left lateral view. C. Segments 1 to 2, ventral view. D. Segments 3 to 4, dorsal view. E. Segments 3 to 4, left lateral view. F. Segments 3 to 5, ventral view. G. Segments 5 to 6, dorsal view. H. Segments 5 to 6, left lateral view. I. Segments 5 to 7, ventral view. J. Segment 7, dorsal view. K. Segment 7, left lateral view. L. Segments 7 to 8, ventral view. M. Segment 8, dorsal view. N. Segment 8, left lateral view. O. Segment 9, ventral view. P. Segment 9, dorsal view. Q. Segment 9, left lateral view. R. Segments 10 (posterior part) to 11, ventral view, showing female sexual dimorphism. S. Segments 10 to 11, dorsal view, showing male sexual dimorphism. T. Segments 10 to 11, left lateral view, showing male sexual dimorphism. U. Segments 10 (posterior part) to 11, dorsal view, showing female sexual dimorphism. All scale bars = 15 µm.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
03AE4066FFF2D41614F5FDA5FE6FFCC0.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808386/files/figure.png	https://doi.org/10.5281/zenodo.15808386	Fig. 1. Map showing the sampling stations. A. Overview of Antarctica, with the Antarctic Peninsula framed. Previous records of Polacanthoderes martinezi Sørensen, 2008 (green dots) and P. shiraseae Yamasaki et al., 2022 (red dots) are marked. B. Antarctic Peninsula with sampling area framed. C. Sampling area with station numbers and stations indicated as yellow dots. Study sites in Andvord Bay refer to OBA – Outer Basin A; MBA – Middle Basin A; IBB – Inner Basin B. Only stations yielding adult kinorhynch specimens are included.	Fig. 1. Map showing the sampling stations. A. Overview of Antarctica, with the Antarctic Peninsula framed. Previous records of Polacanthoderes martinezi Sørensen, 2008 (green dots) and P. shiraseae Yamasaki et al., 2022 (red dots) are marked. B. Antarctic Peninsula with sampling area framed. C. Sampling area with station numbers and stations indicated as yellow dots. Study sites in Andvord Bay refer to OBA – Outer Basin A; MBA – Middle Basin A; IBB – Inner Basin B. Only stations yielding adult kinorhynch specimens are included.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
03AE4066FFF2D41614F5FDA5FE6FFCC0.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/15808457/files/figure.png	https://doi.org/10.5281/zenodo.15808457	Fig. 29. Light micrographs (A–C) and scanning electron micrographs (D) showing segments 10 to 11, dorsal view, in selected Echinoderes spp. A. Female, holotype of E. pennaki Higgins, 1960 (USNM 29746). B. Male, holotype of E. romanoi Landers & Sørensen, 2016 (NHMD 100307). C. Female, paratype of E. obtuspinosus Sørensen et al., 2012 (NHMD 99894). D. Female, non-type of E. romanoi. Scale bars: A, C = 20 µm; B = 10 µm; D = 5 µm.	Fig. 29. Light micrographs (A–C) and scanning electron micrographs (D) showing segments 10 to 11, dorsal view, in selected Echinoderes spp. A. Female, holotype of E. pennaki Higgins, 1960 (USNM 29746). B. Male, holotype of E. romanoi Landers & Sørensen, 2016 (NHMD 100307). C. Female, paratype of E. obtuspinosus Sørensen et al., 2012 (NHMD 99894). D. Female, non-type of E. romanoi. Scale bars: A, C = 20 µm; B = 10 µm; D = 5 µm.	2025-07-01	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen		Zenodo	biologists	Sørensen, Martin V.;Macheriotou, Lara;Braeckman, Ulrike;Smith, Craig R.;Ingels, Jeroen			
