Ammonite

Arnioceras are often found in large numbers in certain rock layers, particularly the Arnioceras stone band. They are one of the most common ammonites found locally, and these specimens are very well-preserved.

Find out more about ammonites on the molluscs pages.

Common name

Ammonite

Scientific name

Arnioceras semicostatum

Type

Molluscs > Cephalopods


Strata

Shales with beef

Time period

Lower Jurassic

Age

190 million years

Where found

Near Lyme Regis

Found by

Pete Langham

Museum

Lyme Regis Museum

Accession number

L.1986.280.8