Radulopecten cf. fibrosus (J. Sowerby, 1816)

Plate 4, fig. 4a, b

cf. 1816 Pecten fibrosus - J. Sowerby: 84, pl. 136, figs 1-2.

Material.

A single fragment of a right valve from the lower? member near Demul (SNSB-BSPG 2020 XCIX 39).

Description and remarks.

Although the specimen does not allow to infer the shape of the bivalve, the ornamentation is so characteristic that it can be placed in the genus Radulopecten without any doubt. The shell is covered with broad, nearly flat-topped radial plicae, separated by much narrower shallow sulci. The radial plicae are crossed by spaced, narrow commarginal lamellae. The ornamentation closely resembles that of Radulopecten fibrosus (J. Sowerby, 1816). For this reason, the specimen is tentatively placed in that species.