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Meaning Of Name: Derived from the Dvina River
Classification: THERAPSIDA; Cynodontia; Family Dviniidae
Age: Later Permian, Zone IV, 245 million years ago
Locality: Sokolki, Malaya, Severnaya (Small North) Dvina River near Archangel'sk, Northern Russia
Cast Size: 10cm in length
This small, omnivorous therapsid is clearly advanced in having a temporal opening so large that on only a thin bar of bone remains to separate it from the eye socket. Of all the therapsids on display in this website it is the one closest to the mammals.