Thyasira sp. 2

Kiel, Steffen, Sami, Marco & Taviani, Marco, 2023, Mollusks (Gastropoda, Bivalvia) from Miocene cold-seep deposits in northern Italy: revisions and additions, European Journal of Taxonomy 910, pp. 115-160 : 141-142

Thyasira sp. 2

Fig. 9C

Material examined

ITALY – Emilia-Romagna • 1 spec.; Casola; MGGC 22312 (L = 7 mm) .

Description

Small, little inflated, sub-triangular shell, surface with distinct, irregular growth increments, umbones elevated, pointed, slightly prosogyrate; posterior sulcus present, widening posteriorly, bordered by indistinct ridge; anterodorsal margin very long, slightly concave.

Stratigraphic and geographic range

Lower Miocene (lower Burdigalian), northern Italy.

Figures

Fig. 9. Thyasirid bivalves from Calcari a Lucina seep deposits in northern Italy. A–B. Thyasira sp. 1, Castiglione dei Pepoli (MGGC 22311). C. Thyasira sp. 2, Casola (MGGC 22312). D–E. Channelaxinus? sp., Caselle A (NRM Mo 204840).