Ammonite

Additional images

Harpoceras falciferum is the marker for the Falciferum Zone of the Lower Toarcian stage of the Upper Lias. Good specimens show beautiful ribbed ornamentation. Below is an identical specimen but from Whitby on the Yorkshire coast. We know that the rocks in both places (Seatown/Eype and Whitby) must be the same age because this ammonite species only existed for a brief period of geological time.

Find out more about ammonites on the molluscs pages.

Common name

Ammonite

Scientific name

Harpoceras falciferum

Type

Molluscs > Cephalopods


Strata

Upper Lias, Junction Bed

Time period

Lower Jurassic

Age

170 million years

Where found

Dorset coast

Found by

Chris Moore

Museum

Lyme Regis Museum

Accession number

L.1999.3.9