沖繩島産魚類化石について : 琉球諸島の古脊椎動物相-そのIV

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This paper briefly describes thirty-two pieces of fossil fish which were collected from the Yonabaru Formation (Loc.1), Shinzato Tuff (Locs.2 and 3), Chinen Sands (Locs.4 to 8) and Naha Limestone (Loc.9) in Okinawajima : the former two formations may be of Pliocene age, while the latter two Pleistocene. Nearly all the specimens are teeth of Heterodontus sp., Isurus cf. paucus GUITART MANDAY, Isurus sp. (2 specimens), Isurus? sp., Carcharhinus sp. (18 specimens), Galeocerdo sp., Squatina sp., Diodon sp. (3 specimens), and incertae sedis (2 specimens). One fragment represents a spinose appendage at snout-periphery of Pristiophorus japonicus GUNTHER. Heterodontus sp., Isurus cf. paucus, Pristiophorus japonicus and Squatina sp. are recorded as the first occurrence as fossil in Japan.
国立科学博物館の論文
1974-09-20