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Silurian and Devonian corals of Japan

100%

Kato M., Minato M., Nikawa I., Kawamura M., Nakai H., Haga S.

Acta Palaeontologica Polonica

1980

tom 25

nr 3-4

Coral assemblages and their faunal sequence for the Silurian and Devonian in four major regions of Japan are reviewed. In Yokokurayama the G₂ fauna with Halysites is Early to Middle Silurian and the G₃ fauna with Schedohatysites is mainly Late Silurian. The Kawauchi Formation of Hikoroichi corresponds to G₃ and a part of G₂. The Okuhinotsuchi Formation of Arisu is mainly correlatable with the G₂. The Ohno fauna of Hikoroichi with Xystriphyllum and the Fukuji fauna are both Early Devonian in age, but their composition is quite different from each other. The Nakazato fauna of Hikoroichi is Middle Devonian. These faunas are composed mostly of cosmopolitan genera. The development of coral faunas may indicate the strong contrast in litho- and biofacies between the Pacific side (outer zone of Southwest Japan and Northeast Japan) and the Japan Sea side (inner zone of Southwest Japan) during the Silurian and Devonian.

Ograniczanie wyników

1 Acta Palaeontologica Polonica

1 Haga S.

1 Kato M.

1 Kawamura M.

1 Minato M.

1 Nakai H.

1 Nikawa I.

1 1980

Wyniki wyszukiwania

Silurian and Devonian corals of Japan