<国立科博専報>沖繩本島産象化石について : 琉球諸島の古脊椎動物相-そのIII

概要

論文の詳細を見る
A fossil elephant tooth was discovered from the sea shore about 1.5km southwest of Kyan village, Itoman-shi, Okinawa, by Mr. Kiichi Maja of Ginowan-shi. The specimen was brought to T. NOHARA in October 1972 for study. The specimen is the upper second tooth of six molars. As indicated in figure 3,the specimen is incomplete and very small with the surface worn out. The number of ridges in the present specimen, however, is nearly the same as in Palaeoloxodon naumanni (MAKIYAMA) from the Seto Inland Sea (HASEGAWA, 1972), the lameller frequency being 9 in 50×2mm. And the shape, enamel ridges and other characters are very similar to P. naumanni hitherto found in Japan. The stratigraphic horizon of the occurrence of this fossil is probably Naha limestone, a member of the Ryukyu limestone. This fact is very important and interesting for considering the Paleogeographic situation of the Ryukyu Islands and the Asiatic Continent.
国立科学博物館の論文
1973-12-20