Ammonite

Ammonites have a spiral shell divided into chambers. It could control its buoyancy in the water by filling the chambers with gas and water. The soft body of the ammonite only took up the last half whorl of the shell. Only the shells of ammonites have ever been found as fossils.

Find out more about ammonites on the molluscs pages.

Common name

Ammonite

Scientific name

Bigotites

Type

Molluscs > Cephalopods


Strata

Inferior Oolite

Time period

Middle Jurassic

Age

175 million years

Where found

Unknown

Found by

Unknown

Museum

Bridport Museum

Accession number

BRPMG 1185