Bivalve oyster shell

 Filter feeder

This is the commonest type of bivalve from the Upper Greensand of East Devon. You can tell it’s an oyster because the shell is composed of many fine layers built up one on top of the other. Called Exogyra, it would have sat on the sea floor opening its smaller shell (the specimen in the middle shows that side) to filter sea water for food.

Find out more about bivalves on the molluscs pages.

Common name

Bivalve oyster shell

Scientific name

Exogyra obliquata


Molluscs > Bivalves


Upper Greensand

Time period

Lower Cretaceous


110 million years

Where found

Pinhay Bay

Found by

Richard Edmonds


Allhallows Museum, Honiton

Accession number