Sporadoceratinae
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Sporadoceratinae is one of two subfamilies of the Sporadoceratidae family, a member of the Goniatitida order. They are an extinct group of ammonoid, which are shelled cephalopods related to squids, belemnites, octopuses, and cuttlefish, and more distantly to the nautiloids. Goniatites are extinct ammonoids, shelled cephalopods related to squid, octopus, and belemnites, that form the order Goniatitida. The Gonatitida originated from within the more primitive anarcestine ammonoids in the Middle Devonian some 390 million years ago. Surviving the Late Devonian extinction, goniatitids flourished…mehr

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Sporadoceratinae is one of two subfamilies of the Sporadoceratidae family, a member of the Goniatitida order. They are an extinct group of ammonoid, which are shelled cephalopods related to squids, belemnites, octopuses, and cuttlefish, and more distantly to the nautiloids. Goniatites are extinct ammonoids, shelled cephalopods related to squid, octopus, and belemnites, that form the order Goniatitida. The Gonatitida originated from within the more primitive anarcestine ammonoids in the Middle Devonian some 390 million years ago. Surviving the Late Devonian extinction, goniatitids flourished during the Carboniferous and Permian only to become extinct at the end of the Permian some 251.4 million years ago. They were survived by their cousins the ceratite ammonoids, indirect descendants of the Anarcestida.