岐阜県デボン系福地層の層序とハチノスサンゴ動物群

概要

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The Fukuji Formation is subdivided into the lower Takaharagawa Member and the upper Ozako Member (new name). The Takaharagawa Member exceeds 200 m thick and mainly composed of limestones, argillaceous limestones and calcareous shales with subordinate amounts of sandstones and tuffs to tuffaceous sandstones. The Ozako Member is estimated to be 150 m thick and composed of massive limestones. The formation ranges in age from the Lochkovian (early Early Devonian) to possibly the Eifelian (early Middle Devonian). Constituents of the favositid coral fauna of the formation are Mesofavosites igoi (Kamei, 1955), Sapporipora kamitakaraensis Tsukada, 2005, Pachyfavosites katoi sp. nov., Plicatomurus flexuosus (Kamei, 1955), Squameopora takarensis (Kamei, 1955), Squameofavosites fukujensis (Kamei, 1955), Squameofavosites ichinotanensis (Kamei, 1955), and Squameofavosites sugiyamai (Kamei, 1955). The generic assignment of a species ichinotanensis changes from Favosites. Sapporipora karataniorum Tsukada, 2005 and Squameopora hidensis (Kamei, 1955) are synonymized respectively with Sapporipora kamitakaraensis and Squameopora takarensis. Pachyfavosites katoi represents the first record of the genus in Japan.
国立科学博物館の論文