Dvinia

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

Dvinia Temporal range: Middle-Late Permian 260–252 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Restoration of Dvinia prima
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Synapsida
Clade:	Therapsida
Clade:	Cynodontia
Family:	†Dviniidae Tatarinov, 1968
Genus:	†Dvinia Amalitskii, 1922
Species:	†D. prima
Binomial name
†Dvinia prima Amalitskii, 1922

Dvinia was a small omnivore possessing a large temporal opening typical of advanced therapsids, with a thin postorbital bar separating the eye from the muscle attachment. As a cynodont, it was closely related to mammals. The dentition consisted of a set of small incisors followed by 2 canines and 10-14 postcanines.

See also

• List of therapsids