Ammonite Fossils #1
by Science Photo Library
Title
Ammonite Fossils #1
Artist
Science Photo Library
Medium
Photograph - Photograph
Description
Ammonite fossils on display in a small fossil museum. Ammonites were marine invertebrates. They first appeared in the fossil record around 400 million years ago in the late Silurian and early Devonian periods and became extinct at the end of the Cretaceous period, 65 million years ago. Ammonites are index fossils, their presence allows the rock layer in which they are found to be dated to specific geological time periods. Photographed in Charente-Maritime, France.
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September 13th, 2018
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