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meaning: "Named after the Dvina River"
Named By: V. Amalitzky in 1922
Time Period: Late Permian, 254 Ma
Location: Russia
Size: Reconstructed skull about 20 centimetres long, body length estimated to be about 50 centimetres long
Diet: Omnivore
Fossil(s): Partial skulls
Classification: | Chordata | Synapsida | Therapsida | Cynodontia |
Also known as: | Permocynodon sushkini |

Dvinia is an extinct genus of cynodont therapsid 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.

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.

Read more about Dvinia at Wikipedia
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