Bairdiacypris? sp. 4

Fig. 6 T–U

Material examined

ROMANIA • 1 complete carapace; Black Sea, Romanian Continental Shelf, borehole 817LV, sample CM31B; Rhaetian, Upper Triassic; MNHN.F. F63213 • 1 complete carapace; same locality as for preceding but sample CM31A; Rhaetian, Upper Triassic; MNHN.F. F63214 • 5 complete carapaces; same locality as for preceding but samples CM31A, CM31B and CM31C; Rhaetian, Upper Triassic; MNHN.F. F63345 .

Dimensions

RV: L = 327–809 µm; H = 157–326 µm; H/L = 0.38–0.48.

LV: L = 327–809 µm; H = 167–348 µm; H/L = 0.41–0.51.

Occurrence

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

Remarks

The absence of an antero-ventral offset of the overlap leads to the generic attribution to Bairdiacypris rather than Fabalicypris . However, in the absence of angulations at the dorsal margin, this identification is still tentative. Bairdiacypris ? sp. 4 is closely related to Fabalicypris ? praelonga Donze, 1966 from the Plicatulus Horizon, Hettangian, Early Jurassic, of Le Sartre, Ardèche, France (Donze 1966). However, Bairdiacypris ? sp. 4 differs by having a more bairdiid AB with a maximum of curvature located higher and the AVB more raised dorsally. It is worth noting that the doubt in the generic attribution of Fabalicypris ? praelonga is related to Donze’s inability to observe the inner structures (Donze 1966).