Bivalve shell

Here is a large, quite common and easily identified bivalve shell from the Corallian rocks of the Portland Harbour Shore. As the name suggests, bivalves consist of two shells. ‘Bi’ means two and ‘valve’ means shell. The shells are held together by a strong muscle, and hinged at the pointed end.

Find out more about bivalves on the molluscs pages.

Common name

Bivalve shell

Scientific name

Ctenostreon proboscideum

Type

Molluscs > Bivalves


Strata

Corallian Group, Ironshot Oolite

Time period

Upper Jurassic

Age

160 million years

Where found

Sandsfoot Castle, near Weymouth

Found by

Unknown

Museum

Dorset County Museum, Dorchester

Accession number

DCM.G.04815