<国立科博専報>徳之島・奄美大島における古脊椎動物学的・古人類学的調査の概要

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Vertebrate paleontological and paleoanthropological survey was carried out in Tokunoshima and Amami-oshima islands in December, 1989,as part of the Natural History Research Project of Japanese Islands led by the National Science Museum. A total of seven localities in Tokunoshima were surveyed. Gushikyan, a small dry cave near Kempuku (Fig. 1-1) yielded 5 species of small mammals (Crocidula sp., Rhinolophus cornutus, Pentalagus furnessi, Diplothrix legata, and Tokudaia osimensis; Fig. 3), all of which are known as living species. Their precise age is unknown but inferred as historic in age from an analysis of fluorine content of a bone remain. A child skeleton from Yowoki shelter (Fig. 1-3) was studied in detail by Baba and others, and is reported elsewhere in this issue. Hard travertine containing numerous fossil deer bones has been known from the cliff located west of Kojima (Fig. 1-4). The travertine was loosened with acetic acid and produced numerous specimens of Cervus (Metacervulus) astylodon with a few specimens of Pentalagus furnessi, Diplothrix legata, and Tokudaia osimensis (Fig. 3). Cervus (Metacervulus) astylodon was studied in detail by Otsuka (this issue). Small mammal fossils were newly found from Tokunoshima (Tomida and Otsuka, in prep). Tooth plates of a Diodon sp., a porcupinefish (Fig. 4) were found in the Itokina Formation at Inutabu-misaki (Fig. 1-5), and a tooth of a Heterodontus sp., a bullhead shark (Fig. 5) was obtained from the Kametsu Formation at Kametoku (Fig. 1-6), both of the Ryukyu limestone. No fish fossils had been previously known from Tokunoshima. Although no Ryukyu limestone is known from Amami-oshima Island, there are some Paleozoic-age limestone bodies within the Yuwan Formation in western Yamato-son and northern Uken-son. Two routes along the limestone bodies and an abandoned quarry were surveyed (Fig. 7), but no vertebrate or human remains were found.
国立科学博物館の論文
1990-12-01

<国立科博専報>徳之島・奄美大島における古脊椎動物学的・古人類学的調査の概要

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