Dvinia

Dvinia is an extinct genus of cynodonts of the family Dviniidae found in Sokolki on the Northern Dvina River near Kotlas in Arkhangelsk Oblast, Russia. Its fossil remains date from the Late Permian and were found with Inostrancevia, Scutosaurus and Vivaxosaurus.

Dvinia
Temporal range: Late Permian, 254 Ma
↓
Restoration of Dvinia prima
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Clade: Therapsida
Clade: Cynodontia
Family: Dviniidae
Genus: Dvinia
Amalitskii, 1922
Type species
Dvinia prima

The species was small omnivore containing an extremely large temporal opening typical of advanced therapsids, with a thin bone separating the eye and muscle attachment. It is very close in the evolutionary line to mammals, but more analysis of the Cynodontia is needed. The teeth contain small incisors followed by 2 canines and 10-14 molar teeth following.

See also

Sources

    • Patricia Vickers-Rich and Thomas H. Rich, The Great Russian Dinosaurs, Guntar Graphics, 1993, pg.41


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