VAUGHAN FLEMING / SCIENCE PHOTO LIBRARY VAUGHAN FLEMING / SCIENCE PHOTO LIBRARY
Goniatite fossils. The goniatites were primitive ammonites (extinct cephlapod molluscs) that flourished during the Devonian, Carboniferous and Permian periods (dating from 400 to 251 million years ago). They were a free swimming animal, possessing a head with two well developed eyes and grasping tentacles. They swam by squirting water out of the body cavity.
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