Pokornyopsis sp. 1

Fig. 13 B–C

Material examined

ROMANIA • 1 complete carapace; Black Sea, Romanian Continental Shelf, borehole 817LV, sample CM31B; Rhaetian, Upper Triassic; MNHN.F. F63318.

Dimensions

L = 618 µm; H = 494 µm.

Occurrence

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

Remarks

Pokornyopsis feifeli (Triebel, 1941) from the Early to Late Jurassic (see Tóth & Cséfán 2018 for a summary) is characterized by having strongly reticulate valves with parallel ribs surrounded by 3 concentric marginal ribs. Pokornyopsis sp. 1 has less numerous and more spaced parallel ribs on the lateral surface. The three marginal ribs of P. feifeli are here lacking, a strong thin ridge runs parallel to the free margin, the rostrum is more pronounced, and the incisure is deeper and narrower.