The Developments of Japanese Dinosaur researches
inosaur fossils are poorly known in Japan. Realistic Animatronic dinosaur Japanese professional and amateurs paleontologists dreamed to discover a Japanese dinosaur for a long time. In 1978, this dream came true as Tetsuro Hanai of the University of Tokyo and Tomoki Kase of the National Science Museum found a big fossil bone. In 1980, I visited the National Science Museum in Tokyo. I met Yoshikazu Hasegawa of the Yokohama National University who sent the cast of a nearly complete humerus to me before. This bone belonged to a sauropod dinosaur, and became the first record of dinosaur found in the territory of Japan. T. Hanai and T. Animatronic animal Kase collected the humerus from Late Cretaceous deposits of Iwaizumi- cho, the Miyako Group of Iwate prefecture. This specimen was referred to a species of Mamenchisaurus by Hasegawa in 1991. Discovery of the first dinosaur bone has encouraged Japanese paleontologists to search for more dinosaur fossils in Japan. More than 14 dinosaur sites were reported up to date. Numerous dinosaur track fossils have been found in Late Jurassic to Ci’etaceous deposits from Hokkaido to Kyushu. Deposits of the Tetori Gxoup have yielded most of dinosaur fossils found in Japan ( Y. Azuma, 2009 ) .
A hadrosaur from Sinegorsk of Southern Sakhalin was named Nipponosaurus sac.halinensis by T. Walking dinosaur costume Nagao in 1936. However, Sakhalin became a territorial part of USSR after the Second WorldvWar. In fact, Nipponosaurus was the first dinosaur ever described by a Japanese paleontologist. Reconstruction of the Nipponosaurus skeleton was essentially done based on that of Anatosaurus ( Trachodon ) from North America, by Y. Tomita and Y. Azuma in 2000. The type of Nipponosaurus is housed in the Hokkaido University in Japan.