セトナイカイ セイブ ショトウ シュウヘン カイテイ カラ サンシュツ シタ ナウマンゾウ カセキ
Palaeoloxodon naumanni(Makiyama)remains from the sea floor of Moroshima Islandin the western Seto Inland Sea, Japan
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Kitagawa, Hiromichi Department of Geology and Mineralogy, Kyoto University
Seto, Koji Research Center for Coastal Lagoon Environments, Shimane University
Takahashi, Keiichi Lake Biwa Museum, Kusatsu
Okimura, Yuji Emeritus prof. Hiroshima University
In this paper, we describe 75 tusks and post-cranial skeletal elements of Palaeoloxodon naumanni that were recovered from the sea floor around Moroshima Island in the western Seto Inland Sea of Japan in 1956 and 1957, and discuss their significance.
These specimens are particularly valuable from the biogeographic and morphological viewpoints due to their locality and the details of their discovery. A sacrum（MO 560929-1126）recovered among these specimens is the first report of a sacrum of P. naumanni. An atlas（MO 560929-1117）and a humerus（MO 57-1112）are also compared with those of previously reported well-preserved specimens of P. naumanni. Although the features of the humerus are comparable with those of P. naumanni humeri reported from other areas, the atlas differs from a Lake Nojiri specimen. The differences between the two specimens are most likely attributable to intraspecific variation.
Department of Geoscience, Interdisciplinary Faculty of Science and Engineering, Shimane University
Departmental Bulletin Paper
Interdisciplinary Graduate School of Science and Engineering
Estuary Research Center
12-14,16+ / 1993+