広島県帝釈峡遺跡群における哺乳類の層序学的分布

概要

論文の詳細を見る
Archaeological sites along the Taishaku River, collectively called the Taishaku-kyo sites, have yielded abundant mammalian remains of Late Pleistocene and Holocene Age. Paleontological data on the remains hitherto obtained from four representative sites, the Kannondo, Domen, Anagami and Mawatari sites, are compiled, in order to confirm the biostratigraphic distribution of mammals.About 69% of the well-identified forms known from these sites are extant species which occur in the modern mammal community of this area. Among them, most species are recovered from both Late Pleistocene and Holocene horizons, and thereby they are considered to have continuously inhabited this area since the Late Pleistocene. On the other hand, about 19% are exotic forms which are now absent from this area, but occur in other areas. Because each of them disappears at various horizons, they are assumed to have become extinct in this area at various times ranging from Late Pleistocene to Holocene. The remaining 12% are extinct forms, which occur in the Late Pleistocene horizons only. This suggests that they disappeared from this area by the end of the Late Pleistocene.The horizons for the disappearance of these exotic and extinct forms are assigned to approximately 32, 000-21, 000yrs BP (Panthera cf. pardus), 21, 000-16, 000yrs BP (Anourosorex japonicus, Ursus sp. and elephantids), 16, 000-12, 000yrs BP (Microtus epiratticepoides and M. cf. brandtioides), 10, 000yrs BP (Sinomegaceros yabei) and 6, 000-5, 000yrs BP (Lynx lynx). Although further accumulation of well-dated records is required, these dates are possibly coincident with the approximate timing of extinction of these mammals in Honshu.
日本第四紀学会の論文

広島県帝釈峡遺跡群における哺乳類の層序学的分布

スポンサーリンク

概要

著者

関連論文

スポンサーリンク