Ammonite

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This knobbly ammonite, Mantelliceras, is the most common and most distinctive fossil found in the Lower Chalk in East Devon. This rock layer is known as the Cenomanian Limestone and spans about six million years. Yet it is only about one metre thick in most places, and as a result, there is a lot crammed into it! This is known as a ‘condensed sequence’ where either sediment was deposited slowly, or erosion has taken place, removing some of the sediment after it was laid down. Both apply to the Cenomanian Limestone but as a result, it is very rich in all kinds of fossils. 

Find out more about ammonites on the molluscs pages.

Common name

Ammonite

Scientific name

Mantilliceras

Type

Molluscs > Cephalopods


Strata

Cenomanian Limestone (Lower Chalk)

Time period

Upper Cretaceous

Age

100 million years

Where found

Pinhay Bay

Found by

Richard Edmonds

Museum

Allhallows Museum, Honiton

Accession number

HONAM.2013.32.02