109., 新潟縣下に發見された2象齒化石に就て

概要

論文の詳細を見る
As fossil elephants have not been known from the prefecture except Stegodon orientalis shodoensis described by H., MATSUMOTO, the present occurrences are of special interest., The one discovered in the Wanazu sandstone formation at Okada, Takayanagi-mura, Kariha-gun is Parastegodon cf., akasiensis and the other found in the Oguni brown coal bearing formation at Sizyuppo, Tatibana-mura, Naka-Uonuma-gun, is Palaeoloxodon namadicus naumanni., In regard to the horizons which yielded the fossils, the former is indicative of the early Pleistocene age and the latter of the late Pleistocene., Since Pleistocene deposits are not very well represented in the region and opinion has generally been that the Wanazu sandstone formation is late Pliocene, the find of Pleistocene mammalian remains provides important keys for future research., Finally it may be noted that MATSUMOTO's specimen may possibly be misidentified for it appears to me to be identical with Parastegodon cf., akashiensis.,
1940-08-20