Cretaceous Ammonite Cluster


A beautiful and well preserved cluster of Cretaceous Ammonites. The Ammonites are embedded in a stone wall. The item has been polished and cut revealing beautiful crystal formations, as well as the delicate interior of the shells.

Date: 130 million years ago
Period: Cretaceous period
Provenance: From a Surrey gentleman's collection (DG), purchased on the London Art Market from an ADA member, formed 1990's onward.
Condition: Good condition


SKU: AF-13 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 387 g
Dimensions L 14.0 x W 11.3 x H 1.3 cm
Time Period