Name: Archaeosyodon ‭(‬Ancient Syodon‭)‬.
Phonetic: Ar-kay-o-sy-o-don.
Named By: P.‭ ‬K.‭ ‬Tchudinov‭ ‬-‭ ‬1960.
Classification: Chordata,‭ ‬Therapsida,‭ ‬Dinocephalia,‭ ‬Anteosauridae.
Species: A.‭ ‬praeventor‭ (‬type‭)‬.
Diet: Carnivore.
Size: Skull‭ ‬30‭ ‬centimetres long.‭ ‬Body estimated between‭ ‬1.5‭ ‬and‭ ‬2‭ ‬meters long.
Known locations: Russia,‭ ‬Perm.
Time period: Wordian of the Permian.
Fossil representation: Partial skull‭ (‬PIN‭ ‬1758/3‭)‬.

       So far Archaeosyodon is only known by an incomplete skull,‭ ‬but it is still enough to clearly identify this as a dinocephalian therapsid.‭ ‬As such,‭ ‬Archaeosyodon would have been a predator of other therapsids and possibly other kinds of vertebrates during the Permian.

Further reading
-‭ ‬Upper Permian therapsids of the Ezhovo locality,‭ ‬P.‭ ‬K.‭ ‬Tchudinov‭ ‬-‭ ‬1960.


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