Cladiscites

Cladiscites is an extinct genus of cephalopods in the ammonoid order Ceratitida. These nektonic carnivores lived during the Triassic, from Carnian to Rhaetian age.

Description
Shells of these cephalopods can reach a diameter of about 70 - 170 cm. This genus survived at the extinction event at the end of the Permian.

Distribution
Fossils of species within this family have been found in the Triassic of Afghanistan, Hungary, Italy, Oman, Tajikistan, United States and the East Indies.