Ocadia nipponica, a new species of aquatic turtle (Testudines: Testudinoidea: Geoemydidae) from the Middle Pleistocene of Chiba Prefecture, central Japan
スポンサーリンク
概要
- 論文の詳細を見る
A new species of the genus Ocadia (Testudines; Testudinoidea; Geoemydidae), O. nipponica, is described on the basis of a nearly complete skeleton from the Middle Pleistocene Kiyokawa Formation of the Shimosa Group at Sodegaura City, Chiba Prefecture, central Japan. O. nipponica is distinguished from O. sinensis (Gray) by its more extensive secondary palate, smoother shell surface, narrower second and third vertebral scutes, and larger size (carapace up to 33 cm long). Considering that the living species O. sinensis is distributed in the coastal area of eastern to southeastern Asia in subtropical to tropical climates, the new fossil species may have been thrived in warmer paleoclimatic conditions for the Japanese Islands in the Pleistocene age than hitherto have been estimated on the basis of floral evidences.
- 2007-04-30
著者
-
OKAZAKI HIROKO
Natural History Museum and Institute
-
Hirayama Ren
School Of International Liberal Studies Waseda University
-
KANEKO NAOTOMO
Geological Survey of Japan, AIST
-
Hirayama Ren
Waseda Univ. Tokyo Jpn
-
Kaneko Naotomo
Geological Museum Geological Survey Of Japan Aist
関連論文
- Ocadia nipponica, a new species of aquatic turtle (Testudines: Testudinoidea: Geoemydidae) from the Middle Pleistocene of Chiba Prefecture, central Japan
- MIS11-19 pollen stratigraphy from the 250-m Choshi core, northeast Boso Peninsula, central Japan : Implications for the early/mid-Brunhes (400-780ka) climate signals
- X-ray computed tomography examination of a fossil beaver tooth from the lower Miocene Koura Formation of western Japan
- Chelonian eggshells from the Lower Cretaceous Kuwajima Formation of the Tetori Group, Central Japan
- A theropod dinosaur (Saurischia: Maniraptora) from the Upper Cretaceous Yezo Group of Hokkaido, Northern Japan
- New cheilostome bryozoans from the Middle Miocene of Hokkaido, Japan, and the first fossil occurrences of Kubaninella and Hayamiellina gen. nov.
- X-ray computed tomography examination of a fossil beaver tooth from the lower Miocene Koura Formation of western Japan
- DISTRIBUTION OF FRESHWATER BRYOZOANS IN IBARAKI PREFECTURE, CENTRAL JAPAN, WITH REFERENCE TO WATER QUALITY(Taxonomy and Systematics,Abstracts of papers presented at the 76^ Annual Meeting of the Zoological Society of Japan)