A Goniatite fossil is a kind of extinct marine mollusk that lived from the Devonian and Carboniferous periods, around 416 to million years ago. These cephalopods resembled modern nautiluses in their appearance having a coiled, spiralled shell which was both a cover and home.

The shells of goniatites often exhibit complex patterns of ridges and chambers useful for palaeontologists studying ancient marine ecosystems and the development of mollusks. Goniatites are important index fossils used in dating and correlating rock layers, while their diversity provides clues about past environments and evolutionary trends in the oceans.

Approx Fossil Size: 16.5 cm