''Cladiscites'' is an extinct genus of cephalopods in the

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 ...

. These nektonic carnivores 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 ...

, from Carnian to

Rhaetian The Rhaetian is the latest age of the Triassic Period (in geochronology) or the uppermost stage of the Triassic System (in chronostratigraphy). It was preceded by the Norian and succeeded by the Hettangian (the lowermost stage or earliest age ...

age.

Description

Shells of these cephalopods can reach a diameter of about . This genus survived at the extinction event at the end of the Permian.Museum of Victoria
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Distribution

Fossils of species within this family have been found in the

of Afghanistan, Hungary, Italy, Oman, Tajikistan, United States and the East Indies.

References

;Notes ;Weblinks * James Perrin Smithbr>Upper Triassic marine invertebrate faunas of North America

Triassic ammonites Ammonites of Europe Carnian genus first appearances Norian genera Rhaetian genus extinctions {{ammonite-stub