Oxytoma costata Sowerby

Scale bar = 5cm

Description

Middle Jurassic, Great Oolite (incl. Fuller's Earth & Forest Marble)
Box
Wiltshire
England
M1840
Description:

Oxytoma is an extinct genus of bivalve mollusc characterised by spines or prominent ridges that radiate from the hinge line to the rim of the shell.
Moore, C.

Classification

Mollusca
Loboconcha
Bivalvia
Pteriomorphia
Pterioida
Oxytomidae
Oxytoma
costata