Bergstroemognathus kirki Stait & Druce, 1993

Zhen, Yong Yi, Percival, Ian G. & Webby, Barry D., 2003, Early Ordovician Conodonts from Far Western New South Wales, Australia, Records of the Australian Museum 55 (2), pp. 169-220 : 184

publication ID	https://doi.org/10.3853/j.0067-1975.55.2003.1383
persistent identifier	https://treatment.plazi.org/id/37439A20-CB24-FF32-FF65-FDBFFD55FB61
treatment provided by	Felipe (2021-08-21 20:31:20, last updated 2023-11-09 19:44:58)
scientific name	Bergstroemognathus kirki Stait & Druce, 1993
status

Treatment

Fig. 8A–J View Fig

Bergstroemognathus extensus (Graves & Ellison) .– Cooper, 1981: 161, pl. 31, fig. 12, pl. 32, figs. 9–11, non fig. 7.

Bergstroemognathus kirki Stait & Druce, 1993: 302–303 , figs. 12H, 16D,F–H,J.

Bergstroemognathus kirki .– Zhen et al., 2001: 201–204, figs. 4.14– 4.20, 8.1?, 8.2–8.22.

Material. Five specimens (1 M, 4 Sc) from limestone nodules within shales of the upper Yandaminta Quartzite, and 26 specimens (4 Pa, 6 Pb, 4 Sa, 8 Sb, 3 Sc, 1 Sd) from the overlying Tabita Formation at Mount Arrowsmith ; seven specimens (2 Pb, 3 Sa, 1 Sb, 1 Sc) from unnamed dolomitic limestone unit at Koonenberry Gap .

Remarks. A septimembrate apparatus of B. kirki has been recognized, based on material from the Horn Valley Siltstone of the Amadeus Basin ( Zhen et al., 2001). The western New South Wales material has the same apparatus composition.

References

Cooper, B. J., 1981. Early Ordovician conodonts from the Horn Valley Siltstone, central Australia. Palaeontology 24: 147 - 183.

Zhen, Y. Y., R. S. Nicoll, I. G. Percival, M. A. Hamedi & I. Stewart, 2001. Ordovician rhipidognathid conodonts from Australia and Iran. Journal of Paleontology 75: 186 - 207.

Figures

Fig. 8. A–J, Bergstroemognathus kirki Stait & Druce, 1993: A, Pa element, AMF120307, M/A11-3, outer lateral view; B, Pb element, AMF120308, M/A11-3, outer lateral view; C, Pb element, AMF120309, M/A11-3, inner lateral view; D, M element, AMF120310, M/ A11-3, posterior view; E, Sa element, AMF120311, Y4–4, posterior view; F, Sa element, AMF120212, Y4–4, anterior view; G, Sb element, AMF120313, Y4–4, posterior view; H, Sc element, AMF120314, M/A11-3, posterior view; I, Sc element, AMF120315, M/ A11-3, anterior view; J, Sd element, AMF120316, M/A11-4, anterior view. K,L, Ansella jemtlandica (Löfgren, 1978): K, Sa element, AMF120317, M/A7, lateral view; L, Sa element, AMF120318, C1612, lateral view. M–Q, Acodus sp.: M–O, septicostae element, AMF120305, M/A11-3, lateral view; P, septicostae element,AMF120304, M/A11-3, lateral view; Q, quadricostae element,AMF120306, M/A11-3, lateral view. Scale bars 100 µm.