Bairdia sp. A
publication ID |
https://doi.org/10.5852/ejt.2021.770.1499 |
publication LSID |
lsid:zoobank.org:pub:33F92DB8-3122-4F8E-995B-DBF260B3E390 |
DOI |
https://doi.org/10.5281/zenodo.5560037 |
persistent identifier |
https://treatment.plazi.org/id/21095E52-CF67-C302-FD6F-51D46247EC5D |
treatment provided by |
Felipe (2021-09-29 12:26:51, last updated 2024-11-26 00:56:05) |
scientific name |
Bairdia sp. A |
status |
|
Fig. 8D View Fig
Material examined
USA • 1 complete carapace; Guadalupe Mountains , Williams Ranch Member , Cutoff Formation , Quarry section, sample GM1; Roadian, Middle Permian; MNHN.F. F63422 View Materials • 1 complete carapace, 4 valves; same locality as for preceding; Roadian, Guadalupian, Middle Permian; MNHN.F. F63492 View Materials .
Remarks
Bairdia sp. A is extremely similar to Bairdia salemensis Geis, 1932 from the Mississippian of Indiana ( Geis 1932) that was later considered as a junior synonym of Bairdia permagna Geis, 1932 by Sohn (1960). Sohn (1960) more precisely stated that the type specimens of Bairdia salemensis are young juveniles of Bairdia permagna , although dimensions provided by Geis for Bairdia salemensis are of Lmean =1450 µm, Hmean= 685 µm. In the present analysis, Bairdia sp. A is morphologically closer to specimens considered as young juveniles of Bairdia permagna than to adults and their dimensions are very similar to those reported for Bairdia salemensis with Lmean =1500 µm, Hmean =500 µm. Herein, however, all specimens at hand assigned to Bairdia sp. A are not abundant enough to discuss their ontogenetic development and verify the conspecificity of the species.
Occurrence
Sample GM1, Quarry section, Williams Ranch Member, Cutoff Formation, Guadalupe Mountains, West Texas, USA, Roadian, Middle Permian (this work).
Chen T. C. 1958. Permian ostracods from the Chihsia Limestone of Lungtan, Nanking. Acta Palaeontologica Sinica 6: 235 - 257.
Coryell H. N. & Billings G. D. 1932. Pennsylvanian Ostracoda of the Wayland Shale of Texas. American Midland Naturalist 13 (4): 170 - 189. https: // doi. org / 10.2307 / 2420267
Geis H. L. 1932. Some ostracodes from the Salem Lime- stone, Mississippian of Indiana. Journal of Paleontology 6: 149 - 188. Available from https: // www. jstor. org / stable / 1298173 [accessed 2 Aug. 2021].
Harlton B. H. 1927. Some Pennsylvanian Ostracoda of the Glenn and Hoxbar Formations of southern Oklahoma and of the upper part of the Cisco Formation of northern Texas. Journal of Paleontology 1 (3): 203 - 212.
Sohn I. G. 1960. Paleozoic species of Bairdia and related genera. United States Geological Survey Professional Paper 330 - A: 1 - 105. https: // doi. org / 10.3133 / pp 330 a
Fig. 8 (next page). SEM micrographs of ostracods from the Middle Permian (Roadian, Quarry section, samples GM1 and GM4; Capitanian, MKCS1 section, samples 4 (GM5) and 2 (GM6)) of the Guadalupe Mountains (West Texas, USA). All specimens are temporarily housed in the collections of the Muséum national d’histoire naturelle, Paris, France (MNHN). A–B. Bairdia elcapitanensis Forel sp. nov. A. External view of a right valve, sample GM1 (MNHN.F.F63419). B. Holotype, external view of a right valve, sample GM1 (MNHN.F.F63420). – C. Bairdia cf. postacuta Chen, 1958, right lateral view of a carapace, sample GM1 (MNHN.F.F63421). – D. Bairdia sp. A, right lateral view of a carapace, sample GM1 (MNHN.F.F63422). – E. Bairdia sp. B, right lateral view of a carapace, sample GM1 (MNHN.F.F63423). –F. Bairdia sp. C, right lateral view of a carapace, sample GM1 (MNHN.F.F63424) – G. Bairdiacypris sp. B, right lateral view of a carapace, sample 2 (GM6) (MNHN.F.F63425). – H. Bairdiacypris sp. C, right lateral view of a carapace, sample GM1 (MNHN.F.F63426). – I–J. Fabalicypris acetalata (Coryell & Billings, 1932). I. Right lateral view of a carapace, sample GM1 (MNHN.F.F63427). J. External right of a right valve, sample GM4 (MNHN.F.F63428). – K. Fabalicypris glennensis (Harlton, 1927), right lateral view of a carapace, sample 4 (GM5) (MNHN.F.F63429). – L. Fabalicypris sp., right lateral view of a carapace, sample GM4 (MNHN.F.F63430). – M–N. Orthobairdia texana (Harlton, 1927). M. External right of a right valve, sample 4 (GM5) (MNHN.F.F63431).N. External view of a right valve, sample GM1 (MNHN.F.F63432). – O–R. Ceratobairdia mescaleroella Forel sp. nov. O. Holotype, adult, external view of a left valve, sample 4 (GM5) (MNHN.F.F63433). P. A-1, external view of a left valve, sample 4 (GM5) (MNHN.F.F63434). Q. Paratype, A-1, external view of a left valve, sample 4 (GM5) (MNHN.F.F63435). R. A-1, external view of a left valve, sample 4 (GM5) (MNHN.F.F63436). Scale bars: 100 µm.
MNHN |
Museum National d'Histoire Naturelle |
R |
Departamento de Geologia, Universidad de Chile |
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
Kingdom |
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Phylum |
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Class |
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SubClass |
Podocopa |
Order |
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SuperFamily |
Bairdioidea |
Family |
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Genus |
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