Austroceratites
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''Austroceratites'' is a genus of extinct shelled cephalopods that lived during the
Triassic The Triassic ( ) is a geologic period and system which spans 50.6 million years from the end of the Permian Period 251.902 million years ago ( Mya), to the beginning of the Jurassic Period 201.36 Mya. The Triassic is the first and shortest period ...
, included in
ammonoid Ammonoids are a group of extinct marine mollusc animals in the subclass Ammonoidea of the class Cephalopoda. These molluscs, commonly referred to as ammonites, are more closely related to living coleoids (i.e., octopuses, squid and cuttlefish) ...
order
Ceratitida Ceratitida is an order that contains almost all ammonoid cephalopod genera from the Triassic as well as ancestral forms from the Upper Permian, the exception being the phylloceratids which gave rise to the great diversity of post Triassic ammoni ...
. Within the Ceratitida, ''Autroceratites'' belongs in the family
Ceratitidae ''Ceratitidae'' is an extinct family of ammonite cephalopods. Fossils of ''Ceratitidae'' are found in the Triassic marine strata throughout the world, including Asia, Europe, the Middle East, North America, and Oceania. Selected genera Subfam ...
and subfamily Ceratitinae. Ceratitidae, in which ''Austroceratites'' is placed, is a mid Triassic family that has left evolute to involute, stoutly ribbed, discoidal shells with ceratitic sutures.


References


''Austroceratites'' entry in The Paleobiology Database
accessed 10 July 2012 Ceratitidae Ceratitida genera Triassic ammonites Fossils of France {{Ceratitida-stub