@article{oai:nagoya.repo.nii.ac.jp:00011866,
 author = {大塚, 裕之 and Otsuka, Hiroshi and 中村, 俊夫 and Nakamura, Toshio and 太田, 友子 and Ota, Tomoko},
 journal = {名古屋大学加速器質量分析計業績報告書},
 month = {Mar},
 note = {The Ryukyu Islands, stretching from the Japanese mainland of Kyushu to Taiwan, offer abundant occurrence of fossil terrestrial vertebrates as well as a spectacular diversity of extant endemic species, whose ancestors has migrated from Asian Continent during the past land connections. Among the vertebrate fossils from the different stratigraphic levels in the Ryukyu Islands, those from the Late Pleistocene fissure and cave deposits developed in the Middle Pleistocene Ryukyu Group are more abundant and well preserved than vertebrate fossils found in other levels. To know the ^<14>C ages of the Late Pleistocene vertebrate fossil beds known in the Ryukyu Islands, 17 samples of land snails were collected from 10 localities in the islands ranging from the Okinawa to Yonaguni. The carbon isotope ratios (^<14>C/^<12>C and ^<13>C/^<12>C) of these samples were measured with a Tandetron Accelerator Mass Spectrometry (AMS) of Center for Chronological Research, Nagoya University. The obtained ^<14>C ages were calibrated to calendar ages with an OxCal program using the relative ages of measured samples. The results are as follows. ^<14>C ages of fossil snails collected from totally 10 localities of the vertebrate fossil beds in five islands indicate the ages of Late Pleistocene extending over ca. 47,000 years from the late Early Wurm Glacial age (ca. 37,000 ^<14>C cal BP) to the Latest Pleistocene (ca. 10,000 ^<14>C cal BP)., 第20回名古屋大学年代測定総合研究センターシンポジウム平成19(2007)年度報告<第2部> Proceedings of the 20th symposiumon on Chronological Studies at the Nagoya University Center for Chronological Research in 2007 日時:平成20 (2008)年1月10日(木)～11日(金) 会場:名古屋大学野依記念学術交流館 Date:January10th-11th, 2008 Venue:Nagoya Uhiversity Noyori Conference Hall},
 pages = {135--153},
 title = {琉球列島における脊椎動物化石包含層の^<14>C 年代(第20回名古屋大学年代測定総合研究センターシンポジウム平成19(2007)年度報告)},
 volume = {19},
 year = {2008}
}