Histriabairdia, Forel & Grădinaru, 2020

Forel, Marie-Béatrice & Grădinaru, Eugen, 2020, Rhaetian (Late Triassic) ostracods (Crustacea, Ostracoda) from the offshore prolongation of the North Dobrogean Orogen into the Romanian Black Sea shelf, European Journal of Taxonomy 727, pp. 1-83 : 38

Histriabairdia gen. nov. sp. 2

Fig. 8 S–U

Material examined

ROMANIA • 1 broken carapace; Black Sea , Romanian Continental Shelf , borehole 817LV, sample CM31C; Rhaetian, Upper Triassic; MNHN.F. F63242 • 1 broken carapace; same collection data as for preceding; Rhaetian, Upper Triassic; MNHN.F. F63243 • 1 broken RV; same collection data as for preceding; Rhaetian, Upper Triassic; MNHN.F. F63244 • 2 RV; same collection data as for preceding; Rhaetian, Upper Triassic; MNHN.F. F63352 .

Occurrence

Romanian Continental Shelf, Black Sea, Rhaetian, Upper Triassic (this paper).

Remarks

No complete specimen of Histriabairdia gen. nov. sp. 2 has been found, so no dimensions are provided. Histriabairdia gen. nov. sp. 2 is close to Anchistrocheles sp. B in Khosla et al. 2006 (here considered a member of Histriabairdia gen. nov.) from the Bajocian–Bathonian interval, Middle Jurassic, of India ( Khosla et al. 2006), from which it differs by having a more elongate and caudate posterior extremity, a more rounded AVB and by lacking the median vertical ‘sulcus’.

Figures

Fig. 8 (opposite page). SEM micrographs of ostracods from borehole 817 Lebăda Vest, drill core CM31, western portion of Black Sea shelf, Rhaetian, Late Triassic. All specimens are housed in the collections of the Muséum national d’histoire naturelle, Paris, France (MNHN). A. Fabalicypris cf. triassica Bolz, 1971, external view of a left valve, sample CM31A (MNHN.F.F63228). B. Hiatobairdia sp. 1, right lateral view of a carapace, sample CM31B (MNHN.F.F63229). C–E. Hiatobairdia sp. 2. C. Right lateral view of a carapace, sample CM31B (MNHN.F.F63230). D. Same specimen, dorsal view. E. External view of a left valve, sample CM31B (MNHN.F.F63231). F. Hiatobairdia sp. 3, right lateral view of a carapace, sample CM31B (MNHN.F.F63232).G–O. Histriabairdia pontuseuxinusensis Forel gen. et sp. nov. G. External view of a left valve, sample CM31C (MNHN.F.F63233). H. Right lateral view of a complete carapace, sample CM31C (MNHN.F.F63234). I. External view of a right valve, sample CM31C (MNHN.F.F63235). J. Right lateral view of a complete carapace, sample CM31C (MNHN.F.F63236). K. External view of a left valve, sample CM31C (MNHN.F.F63237). L. Holotype, right lateral view of a complete carapace, sample CM31B (MNHN.F.F63238). M. Same specimen, dorsal view. N. Paratype, external view of a left valve, sample CM31B (MNHN.F.F63239). O. Same specimen, inner view. P–R. Histriabairdia gen nov. sp. 1. P. External view of a right valve, sample CM31C (MNHN.F.F63240). Q. Right lateral view of a complete carapace, sample CM31C (MNHN.F.F63241). R. Same specimen, dorsal view. S–U. Histriabairdia gen. nov. sp. 2. S. Right lateral view of a carapace broken anteriorly and posteriorly, sample CM31C (MNHN.F.F63242). T. Right lateral view of a carapace broken anteriorly and posteriorly, sample CM31C (MNHN.F.F63243). U. External view of a broken right valve, sample CM31C (MNHN.F.F63244). Scale bars: 100 µm.