Petasobairdia campbelli

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 : 41

Petasobairdia campbelli Chitnarin in Chitnarin et al., 2017

Fig. 11H–I

Petasobairdia campbelli Chitnarin in Chitnarin et al., 2017: 670, figs 12j–p.

Material examined

USA • 1 left valve; Guadalupe Mountains , West Texas, Williams Ranch Member , Cutoff Formation , Quarry section, sample GM2; Roadian, Middle Permian; MNHN.F. F63461 • 1 left valve; same locality as for preceding but sample GM4; Roadian, Middle Permian; MNHN.F. F63462 .

Occurrence

Central Thailand, Artinskian, Roadian?, Early–Middle Permian ( Chitnarin et al. 2017); samples GM2, GM4, Quarry section, Williams Ranch Member, Cutoff Formation, Guadalupe Mountains, West Texas, USA, Roadian, Middle Permian (this work).

Figures

Fig. 11 (next page). SEM micrographs of ostracods from the Middle Permian (Roadian, Quarry section, samples GM1, GM2 and GM4; Capitanian, MKCS1 section, samples 4 (GM5) and 2 (GM6)) of the Guadalupe Mountains (West Texas, USA), except R and S from the late Capitanian, Middle Permian, Penglaitan section, Guangxi, South China (Zazzali 2016, unpublished PhD thesis). All specimens from A–Q are temporarily housed in the collections of the Muséum national d’histoire naturelle, Paris, France (MNHN), specimens R and S are housed in the collections of the Sorbonne University, Paris, France. A–B. Ceratobairdia cf. ventrocostata Wang, 1978. A. External view of a left valve, sample 4 (GM5) (MNHN.F.F63454). B. External view of a left valve, sample 2 (GM6) (MNHN.F.F63455). – C–G. Ceratobairdia pratti Forel sp. nov. C. Holotype, right lateral view of a carapace, sample GM1 (MNHN.F.F63456). D. Paratype, external view of a left valve, sample GM1 (MNHN.F.F63457). E. External view of a left valve, sample GM1 (MNHN.F.F63458). F. External view of a left valve, sample GM1 (MNHN.F.F63459). G. External view of a left valve, sample GM1 (MNHN.F.F63460). – H–I. Petasobairdia campbelli Chitnarin in Chitnarin et al., 2017. H. External view of a left valve, sample GM2 (MNHN.F.F63461). I. External view of a left valve, sample GM4 (MNHN.F.F63462). – J. Petasobairdia cf. bicornuta Chen in Chen & Shi, 1982, right lateral view of a carapace, sample 4 (GM5) (MNHN.F.F63463). – K. Petasobairdia? sp., external view of a right valve, sample 4 (GM5) (MNHN.F.F63464). – L. Microcheilinella postspinosa Chen, 1958, right lateral view of a carapace, sample 2 (GM6) (MNHN.F.F63465). – M. Microcheilinella sp. 15 in Zazzali et al. (2015), right lateral view of a carapace, sample 4 (GM5) (MNHN.F.F63466). – N–O. Microcheilinella sp. N. Right lateral view of a carapace, sample 2 (GM6) (MNHN.F.F63467). O. Right lateral view of a carapace, sample 4 (GM5) (MNHN.F.F63468). – P–Q. Denticupachydomella bellcanyonensis Forel sp. nov. P. Holotype, right lateral view of a carapace, sample 4 (GM5) (MNHN.F.F63469). Q. Paratype, external left of a right valve, sample 2 (GM6) (MNHN.F.F63470). – R–S. Microcheilinella sp. D in Zazzali (2016). R. Dorsal view of a carapace (P6M 3778). S. Right lateral view of a carapace (P6M 3779). Scale bars: 100 µm.