Ammonite

Cat’s paw

Here is a Liparoceras ammonite with just the body chamber preserved. Ammonites have a hollow, chambered shell, but the last half of the outer whorl is a long chamber with an open end through which the head and tentacles extended. Often, when the animal died, only the body chamber was filled with mud and the rest of the hollow shell was crushed flat as it became buried.

The image on the right is a close-up of the final chamber wall which is sometimes known as a ‘cat’s paw’ due to the superficial resemblance.

Find out more about ammonites on the molluscs pages.

Common name

Ammonite

Scientific name

Liparoceras sp.

Type

Molluscs > Cephalopods


Strata

Lower Lias

Time period

Lower Jurassic

Age

180 million years

Where found

Unknown

Found by

Unknown

Museum

Sidmouth Museum

Accession number

SID.G042.2010