Bairdia subfusiformis Hamilton, 1942

Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd & Crasquin, Sylvie, 2021, Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA, European Journal of Taxonomy 770, pp. 1-60 : 28-29

Bairdia subfusiformis Hamilton, 1942

Fig. 7O

Bairdia subfusiformis Hamilton, 1942 : pl. 110, figs 8a–b.

Bairdia subfusiformis – Sohn 1960: 32.

Material examined

USA • 1 left valve; Guadalupe Mountains , West Texas, Williams Ranch Member , Cutoff Formation , Quarry section, sample GM1; Roadian, Middle Permian; MNHN.F. F63415 • 1 left valve; Guadalupe Mountains , West Texas, Williams Ranch Member , Cutoff Formation , Quarry section, sample GM1, Roadian; MNHN.F. F63658 • 1 left valve; same locality as for preceding; ‘ McKittrick Canyon’ Member , Bell Canyon Formation , sample 4 (GM5); Capitanian, Middle Permian; MNHN.F. F63490 .

Occurrence

Glass Mountains, West Texas, USA, Roadian, Middle Permian ( Hamilton 1942); sample GM1, Quarry section, Williams Ranch Member, Cutoff Formation, Roadian; sample 4 (GM5), MKCS1 section, ‘McKittrick Canyon’ Member, Bell Canyon Formation, Capitanian; Guadalupe Mountains, West Texas, USA, Middle Permian (this work).

Figures

Fig. 7 (next page). SEM micrographs of ostracods from the Middle Permian (Roadian, Quarry section, samples GM1 and GM2; 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. Libumella cf. athabascensis Green, 1963, left lateral view of a carapace, sample GM1 (MNHN.F.F63401). – B. Fellerites? sp., external view of a right valve, sample GM1 (MNHN.F.F63402). – C. Paraparchites texanus Delo, 1930, right lateral view of a carapace, sample 4 (GM5) (MNHN.F.F63403). – D–H. Paraparchites pecosensis Crasquin sp. nov. D. Holotype, right lateral view of a carapace, sample GM1 (MNHN.F.F63404). E. Right lateral view of a carapace, sample GM1 (MNHN.F.F63405). F. External view of a right valve, sample 2 (GM6) (MNHN.F.F63406). G. External view of a right valve, sample GM1 (MNHN.F.F63407). H. Paratype, left lateral view of a carapace, sample GM1 (MNHN.F.F63408). – I. Acratia sp., right lateral view of a carapace, sample GM2 (MNHN.F.F63409). – J. Acratia cf. sinuata (Kozur, 1991), external view of a left valve, sample GM1 (MNHN.F.F63410). – K. Acratia sinuata (Kozur, 1991), external view of a left valve, sample GM1 (MNHN.F.F63411). – L–M. Bairdia radlerae Kellett, 1934. L. External view of a left valve, sample GM1 (MNHN.F.F63412). M. Right lateral view of a carapace, sample GM1 (MNHN.F.F63413). – N. Bairdia rhomboidalis Hamilton, 1942, right lateral view of a carapace, sample 2 (GM6) (MNHN.F.F63414). – O. Bairdia subfusiformis Hamilton, 1942, external view of a left valve, sample GM1 (MNHN.F.F63415). – P–R. Bairdia elcapitanensis Forel sp. nov. P. Right lateral view of a carapace, sample GM1 (MNHN.F.F63416). Q. Right lateral view of a carapace, sample GM1 (MNHN.F.F63417). R. Paratype, external view of a right valve, sample GM1 (MNHN.F.F63418). Scale bars: 100 µm.