Name: Nipponosaurus ‭(‬Japanese lizard‭)‬.
Phonetic: Nip-pon-o-sore-us.
Named By: Takumi Nagao‭ ‬-‭ ‬1936.
Classification: Chordata,‭ ‬Reptilia,‭ ‬Dinosauria,‭ ‬Ornithischia,‭ ‬Ornithopoda,‭ ‬Hadrosauridae,‭ ‬Lambeosaurinae.
Species: N.‭ ‬sachalinensis‭ (‬type‭)‬.
Diet: Herbivore.
Size: Around four meters long,‭ ‬though possibly slightly larger when fully grown.
Known locations: Russia,‭ ‬Sakhalin.
Time period: Santonian to early Campanian of the Cretaceous.
Fossil representation: Partial post cranial remains and skull elements of a subadult.

       Nipponosaurus is classed as a lambeosaurine hadrosaurid because of the hollow head crest that rises up from the top of the snout,‭ ‬though the incomplete nature of the known remains makes it hard to establish fine details,‭ ‬and reconstructions are usually completed with comparisons to other better preserved genera.‭ ‬Also,‭ ‬because the fossils assigned to the holotype of Nipponosaurus are those of a sub adult,‭ ‬it’s possible that the crest may have still had some way to develop to what it would have been in a fully mature individual.‭ ‬Among other lambeosaurine dinosaurs,‭ ‬the North American Hypacrosaurus is thought to be one of the closest relatives of Nipponosaurus.
       Although the name Nipponosaurus means‭ ‘‬Japanese lizard‭’‬,‭ ‬the holotype remains of this dinosaur were actually found upon the North Pacific Island of Sakhalin.‭ ‬Remains of Nipponosaurus were recovered from here between‭ ‬1934‭ ‬and‭ ‬1937‭ ‬when the southern portion of this island was under Japanese rule‭ (‬as the Karafuto Prefecture‭) ‬until‭ ‬1945‭ ‬when it was annexed by the Soviet Union as part of the Yalta Conference agreements.‭ ‬Today southern Sakhalin remains part of Russia.
       Dinosaurs that actually come from Japan include Fukuisaurus and the predatory Fukuiraptor,‭ ‬both from the Fukui Prefecture of Honshu Island.

Further reading
-‭ ‬Nipponosaurus sachalinensis‭ ‬-‭ ‬A new genus and species of trachodont dinosaur from Japanese Saghalien,‭ ‬T.‭ ‬Nagao‭ ‬-‭ ‬1936.
-‭ ‬On the limb bones of Nipponosaurus sachaliensis Nagao,‭ ‬a Japanese hadrosaurian dinosaur,‭ ‬T.‭ ‬Nagao‭ ‬-‭ ‬1938.
-‭ ‬Nippponosaurus sachalinensis‭ (‬Dinosauria‭; ‬Ornithopoda‭)‬:‭ ‬anatomy and systematic position within Hadrosauridae,‭ ‬D.‭ ‬Suzuki,‭ ‬D.‭ ‬B.‭ ‬Weishampel‭ & ‬N.‭ ‬Minoura‭ ‬-‭ ‬2004.


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