Name: Deuterosaurus ‭(‬Second lizard‭)‬.
Phonetic: Dew-teh-ro-sore-us.
Named By: Karl Eichwald‭ ‬-‭ ‬1860‭?
Synonyms: Deuterosaurus mnemonialis‭? ‬Eurosaurus verus,‭ ‬Mnemeiosaurus jubilaei‭?‬,‭ ‬Uraniskosaurus watsoni‭?‬.
Classification: Chordata,‭ ‬Synapsida,‭ ‬Therapsida,‭ ‬Dinocephalia,‭ ‬Anteosauroidea.
Species: D.‭ ‬biarmicus,‭ ‬D.‭ ‬gigas‭?‬,‭ ‬D.‭ ‬jubilaei,‭ ‬D.‭ ‬mnemonialis‭?‬,‭ ‬D.‭ ‬seeleyi‭.
Diet: Herbivore/Omnivore‭?
Size: Largest skulls about‭ ‬80‭ ‬centimetres long.‭ ‬Total body length estimated at somewhere between‭ ‬5-6‭ ‬meters long.
Known locations: Russia.
Time period: Wordian of the Permian.
Fossil representation: Mostly skulls.

       Deuterosaurus was a dinocephalian therapsid that lived in what is now Russia during the mid Permian.‭ ‬Skulls of Deuterosaurus range in size from about‭ ‬23‭ ‬centimetres for smaller species,‭ ‬to about‭ ‬80‭ ‬for particularly large species.‭ ‬These larger species would make Deuterosaurus one of the larger land animals of the Permian.‭ ‬Dinocephalian therapsids are usually perceived as being herbivorous,‭ ‬but the dentition of Deuterosaurus would also have been useful for tearing out chunks of flesh from animals.‭ ‬This has led to speculation that Deuterosaurus may have augmented its diet with meat,‭ ‬though the large physical size of the body would not be that well suited for chasing down prey.‭ ‬Instead,‭ ‬Deuterosaurus may have scavenged for carrion,‭ ‬perhaps even bullying predators away from their own kills.

Further reading
-‭ ‬Palaeontological notes on reptiles.‭ ‬-‭ ‬Geologica Hungerica,‭ (‬seria palaeontologica‭)‬,‭ ‬v.‭ ‬1,‭ ‬n.‭ ‬1,‭ ‬p.‭ ‬1-84.‭ ‬-‭ ‬F.‭ ‬B.‭ ‬Nopsca‭ ‬-‭ ‬1928.


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