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Psephoderma

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Psephoderma
Temporal range: Late Triassic
Fossil
Scientific classification
Kingdom:
Animalia
Phylum:
Chordata
Genus:
Psephoderma

Fraas, 1896
Species
  • ?P. suevicus
  P. alpinum

This placodont was very similar to its relatives Placochelys and Cyamodus. Psephoderma had a flattened skull and a narrow, straight rostrom. Inside this skull, embeded in the jaws, were rounded teeth speciallized for crushing shellfish it ate. Unlike most placodonts, Psephoderma had a carapace that was divided into two pieces, one on the sholders and back, another on the rear end. Psephoderma grew to 180 cm long and lived in Triassic, about 210 million years ago. It was one of the last placodonts to live. After Psephoderma, no other placodonts evolved.

Sources: www.paleofile.com/Demo/Mainpage/Taxalist/Placodontia.htm 

        users.unimi.it/vertpal/galleriafossili/best-rettili/PSEPHODERMAMORFFUNZ.htm
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