Name: Koshisaurus ‭(‬Koshi lizard‭)‬.
Phonetic: Ko-she-sore-us.
Named By: Masateru Shibata‭ & ‬Yoichi Azuma‭ ‬-‭ ‬2015.
Classification: Chordata,‭ ‬Reptilia,‭ ‬Dinosauria,‭ ‬Ornithischia,‭ ‬Ornithopoda,‭ ‬Hadrosauroidea.
Species: K.‭ ‬katsuyama‭ (‬type‭)‬.
Diet: Herbivore.
Size: Uncertain due to lack of fossils with known elements probably representing juvenile individuals.
Known locations: Japan,‭ ‬Fukui‭ ‬-‭ ‬Kitadani Formation.
Time period: Aptian of the Cretaceous.
Fossil representation: Holotype is a partial maxilla and teeth,‭ ‬with additional post cranial remains‭

       Koshisaurus is a genus of primitive hadrosauroid dinosaur from the early Cretaceous of Japan.‭ ‬At the time of writing all known remains of Koshisaurus are partial as well as probably representing juvenile or sub adult individuals,‭ ‬both of which are factors that make it difficult to ascertain how‭ ‬big this dinosaur could grow.‭ ‬Though not yet exceptionally well known,‭ ‬Koshisaurus has been considered as distinct from Fukuisaurus,‭ ‬another hadrosauroid from the same Formation that Koshisaurus is known from.‭ ‬Possible predators of Koshisaurus could include theropod dinosaurs such as Fukuiraptor.
       Koshisaurus means‭ ‘‬koshi lizard‭’‬.‭ ‬Koshi is the old name for Fukui Prefecture,‭ ‬which is where the Koshisaurus holotype fossils were discovered.‭ ‬The species name katsuyama means‭ ‘‬from Katsuyama‭’‬.

Further reading
-‭ ‬New basaltic hadrosauroid‭ (‬Dinosauria:‭ ‬ornithopoda‭) ‬from the Lower Cretaceous Kitadani Formation,‭ ‬Fukui,‭ ‬central Japan.‭ ‬-‭ ‬Zootaxa‭ ‬3914‭ (‬4‭)‬:‭ ‬421-440.‭ ‬-‭ ‬Masateru Shibata‭ & ‬Yoichi Azuma‭ ‬-‭ ‬2015.


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