Plagiostoma? sp. A

Plate 4, fig. 7a, b

Material.

A strongly crushed single valve with remains of shell from the lower member at Langza (SNSB-BSPG 2020 XCIX 35).

Description and remarks.

The very poorly preserved specimen cannot be identified with certainty. The surface of the apparently rounded triangular-ovate specimen is covered with numerous faint, rounded, radial riblets.