Chroniosaurus
Sign in to savethumb|left|Restoration of C. dongusensis Chroniosaurus is an extinct genus of chroniosuchid stegocephalian, often considered a reptiliomorph but possibly a stem-tetrapod, from upper Permian (upper Tatarian age) deposits of Novgorod, Orenburg and Vologda Regions, Russia. It was first named by Tverdokhlebova in 1972 and the type species is Chroniosaurus dongusensis.
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thumb|left|Restoration of C. dongusensis Chroniosaurus is an extinct genus of chroniosuchid stegocephalian, often considered a reptiliomorph but possibly a stem-tetrapod, from upper Permian (upper Tatarian age) deposits of Novgorod, Orenburg and Vologda Regions, Russia. It was first named by Tverdokhlebova in 1972 and the type species is Chroniosaurus dongusensis.
== Habitation == Its lifestyle is uncertain. An early study suggested a fairly aquatic lifestyle, but its femoral microanatomy and dorsal dermal plates suggest a rather terrestrial lifestyle.