Ammonite

A small specimen of the zonal ammonite Leioceras opalinum. It gives its name to the Opalinum Zone, the first zone of the Middle Jurassic.

Find out more about ammonites on the molluscs pages.

Common name

Ammonite

Scientific name

Leioceras opalinum

Type

Molluscs > Cephalopods


Strata

Upper Lias, Bridport Sands

Time period

Lower Jurassic

Age

170 million years

Where found

Dorset coast

Found by

Chris Moore

Museum

Lyme Regis Museum

Accession number

L.1999.2