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Goniatites range from approximately 35-45mm in length.

Fossils range from 35-40mm in length.

Length of fossils range from 55-65mm.

Length of fossils range from approximately 35-45mm.

Weight is approximate. 

Goniatites are extinct ammonoids related to squid, octopus and belemnites that form the order Goniatitida. Goniatites are cephalopods which derived from the Agoniatitida 390 million years ago during the Middle Devonian Era. Goniatites survived&...