Name: Polonosuchus.
Phonetic: Po-lo-no-soo-kus.
Named By: Stephen L.‭ ‬Brusatte,‭ ‬Richard J.‭ ‬Butler,‭ ‬Tomasz Sulej‭ & ‬Grzegorz Niedźwiedzki‭ ‬-‭ ‬2009.
Synonyms: Teratosaurus silesiacus
Classification: Chordata,‭ ‬Sauropsida,‭ ‬Archosauromorpha,‭ ‬Rauisuchidae.
Species: P.silesiacus‭ (‬type‭)‬.
Diet: Carnivore.
Size: Often credited as being about‭ ‬5-6‭ ‬meters long,‭ ‬a more precise size is still unknown due to the lack of fossil remains for the genus.
Known locations: Poland.
Time period: Carnian of the Triassic.
Fossil representation: Partial left maxilla.

       The holotype specimen of Polonosuchus,‭ ‬a partial left maxilla was originally described as a species of Teratosaurus in‭ ‬2005.‭ ‬A re-evaluation of the specimen led to the‭ ‬2009‭ ‬creation of Polonosuchus.‭ ‬The former species name,‭ ‬silesiacus was retained to create the new type species P.‭ ‬silesiacus,‭ ‬as is standard procedure in such naming circumstances.
       As a rauisuchian,‭ ‬Polonosuchus would be expected to have been a quadrupedal predator with tough hide and armour along the back and upper flanks.‭ ‬Rauisuchians are also believed to have been capable of rearing up on‭ ‬their hind legs,‭ ‬perhaps to manoeuvre themselves when attacking larger animals.
       Polonosuchus should not be confused with the similarly named Postosuchus from North America,‭ ‬something which is especially easy to do given the expected physical similarity between these two rauisuchians.

Further reading
-‭ ‬A new rauisuchian reptile‭ (‬Diapsida:‭ ‬Archosauria‭) ‬from the Late Triassic of Poland‭ ‬-‭ ‬Journal of Vertebrate Paleontology,‭ ‬25‭(‬1‭)‬:78-86.‭ ‬-‭ ‬T.‭ ‬Sulej‭ ‬-‭ ‬2005.
-‭ ‬The taxonomy and anatomy of rauisuchian archosaurs from the Late Triassic of Germany and Poland‭ ‬-‭ ‬Acta Palaeontologica Polonica‭ ‬54‭ (‬2‭)‬:‭ ‬221‭–‬230‭ ‬-‭ ‬Stephen L.‭ ‬Brusatte,‭ ‬Richard J.‭ ‬Butler,‭ ‬Tomasz Sulej‭ & ‬Grzegorz Niedźwiedzki‭ ‬-‭ ‬2009.


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