Mode of occurrence and composition of bivalves of the Middle Jurassic Mitarai Formation, Tetori Group, Japan

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概要

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• The Middle Jurassic Mitarai Formation distributed in Shokawa Village, Gifu Prefecture, central Japan, is interpreted as deposits of wave-dominated shelf environments. The muddy shelf deposits yield abundant molluscs showing various modes of occurrence that can be divided into three fossil assemblages : (1) the autochthonous Modiolus maedae-Tetorimya carinata assemblage with commonly in-situ preserved semi-infauna and deep burrowers; (2) the Entolium inequivalve assemblage characterized by mixed autochthonous infauna and parautochthonous free-living elements; and (3) the allochthonous Inoceramus maedae assemblage. The Entolium inequivalve assemblage contains the chemosymbiotic bivalve Solemya and is associated with a low-diversity ichnofauna suggestive of low oxygen conditions.

• 日本古生物学会の論文
• 2001-06-29

著者

• Komatsu Toshifumi

  Department Of Earth Sciences Faculty Of Science Kumamoto University

• Komatsu Toshifumi

  Department Of Earth And Planetary Science Graduate School Of Science Kyoto University

• SAITO RYO

  Institut fur Palaontologie der Universitat Wurzburg

• FURSICH FRANZ

  Institut fur Palaontologie der Universitat Wurzburg

関連論文

• Mode of occurrence and composition of bivalves of the Middle Jurassic Mitarai Formation, Tetori Group, Japan
• Benthic fossil assemblages and depositional facies of the Middle Triassic (Anisian) Yuqing Member of the Qingyan Formation, southern China
• Stratigraphy and fossil bivalve assemblages of the mid-Cretaceous Goshoura Group, southwest Japan

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