Goniatite fossils

Ammonites and Goniatites are both Ammonoids and are similar see the link for mor information Ammonite Goniatids, informally goniatites, are ammonoid cephalopods from the Middle Devonian some 390 million years ago (around Eifelian stage). Goniatites (goniatitids) survived the Late Devonian extinction to flourish during the Carboniferous and Permian only to become extinct at the end of the Permian some 139 million years later.

For more information see our blog post Goniatites and Ammonites