Ammonite

Ammonites with uneven coils like these are called heteromorph ammonites. Uncoiled Cretaceous ammonite shells have similar shapes to belemnite guards (the back of the shell). However, belemnite guards were inside the animals, whereas ammonite shells enclosed the animals’ bodies.

Find out more about ammonites on the molluscs pages.

Common name

Ammonite

Scientific name

Sciponoceras baculoides

Type

Molluscs > Cephalopods


Strata

Chalk, Lower

Time period

Upper Cretaceous

Age

96 million years

Where found

Armswell

Found by

Unknown

Museum

Dorset County Museum, Dorchester

Accession number

DCM.G.09710-11