Dvinosaurus was first found near the village of Sokolki in Arkhangelsk and named after the Northern Dvina River, which was close to the locality where it was discovered.
•
The first three species, D. primus (the type species), D. secundus, and D. tertius, were described by Russian paleontologist Vladimir Prokhorovich Amalitskii in 1921.
•
Two additional species, D. egregius, and D. purlensis, were named by Mikhail Shishkin in 1968.