Mode of occurrence and composition of bivalves of the Middle Jurassic Mitarai Formation, Tetori Group, Japan.
スポンサーリンク
概要
- 論文の詳細を見る
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
日本古生物学会 | 論文
- 多変量解析を用いた化石ウチムラサキガイ (マルスダレガイ科) の殻形態の解析とその古生物学的意義
- 鮮新統池子層のシロウリガイ類群集の種組成, 産状とタフォノミー
- 南部フォッサマグナ地域の新第三紀貝化石群
- 本州沖黒潮流軸部に生息する現生浮遊性有孔虫の深度分布とその季節変化
- 新生代の哺乳類進化と絶滅事変