Bairdia radlerae Kellett, 1934

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

Bairdia radlerae Kellett, 1934

Fig. 7L–M

Bairdia radlerae Kellett, 1934: 125 , pl. 14 figs 3a–c.

Bairdia radlerae – Sohn 1960: 31.

Material examined

USA • 1 left valve; Guadalupe Mountains , West Texas, Williams Ranch Member , Cutoff Formation , Quarry section, sample GM1; Roadian, Middle Permian; MNHN.F. F63412 • 1 complete carapace; same locality as for preceding; Roadian, Middle Permian; MNHN.F. F63413 • 78 valves; Guadalupe Mountains , West Texas, Williams Ranch Member , Cutoff Formation , Quarry section, samples GM1, GM2, and GM4; Roadian; MNHN.F. F63657 • 27 valves; same locality as for preceding; ‘ McKittrick Canyon’ Member , Bell Canyon Formation , MKCS1 section, samples 4 (GM5) and 2 (GM6), Capitanian; Middle Permian; MNHN.F. F63488 .

Occurrence

Kansas, USA, Asselian, Sakmarian, Early Permian ( Kellett 1934); samples GM1, GM2, GM4, Quarry section, Williams Ranch Member, Cutoff Formation, Roadian; samples 4 (GM5) and 2 (GM6), MKCS1 section, ‘McKittrick Canyon’ Member, Bell Canyon Formation, Capitanian; Middle Permian, Guadalupe Mountains, West Texas, USA (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.