Bivalve shell

There are Myophorella clavellata and Gervillia bivales on this block. Notice how all of the shells are lying in the same orientation. This suggests that a strong current was flowing across the sea bed when these animals became buried. Convex shells tend to flip over with the curved face uppermost as this is a more stable angle than the other way around. This is known as a ‘way up structure’ and can be really useful in mountain ranges where earth movements have folded the rocks so extremely that they might be upside down.

Find out more about bivalves on the molluscs pages.

Common name

Bivalve shell

Scientific name

Myophorella clavellata

Type

Molluscs > Bivalves


Strata

Corallian Group

Time period

Upper Jurassic

Age

160 million years

Where found

Weymouth

Found by

Unknown

Museum

Dorset County Museum, Dorchester

Accession number

DCM.G.04817