Large Ammonite Fragment

£ 100.00

A section of a very large Ammonite, displaying the classic spiral shell, formed as the ammonite grows. The fossil is around 195 million years old, and was found in Lyme Regis, Dorset. The Ammonite has been cut into a fragment, though it remains in very good condition, save some minor chips and wear to the fossil’s surface.

Date: Circa 195 million years old
Period: Jurassic Period
Provenance: From the ex Heather Gerrard collection.
Condition: Very good condition.

In stock

SKU: AF-30 Category: Tags: ,

Ammonites are part of the cephalopod family, along with Nautiloids and Coleoids (which include squid and octopuses). Although Ammonites look similar to Nautiloids, both species inhabit a coiled shell, they are actually believed to be more closely related to Coleoids. Ammonites were born with one tiny shell and built new chambers as they grew. They would have moved into the new chamber, sealing off the older, smaller chambers, these chambers were also filled with gas, allowing the ammonite to control its buoyancy.

Ammonites first appeared around 450 million years ago, during the Paleozoic Era, and became extinct around 66 million years ago, at the end of the Cretaceous period. Ammonites became extinct at the same time as the dinosaurs, in a mass extinction believed to have been caused by an asteroid collision.

Weight 6050 g
Dimensions L 27 x W 8.9 x H 13.8 cm
Time Period


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