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This paper presents the first description on the Triassic coral faunas from Japan. The material came from the upper part of the Konose’s Group which is typically distributed in the middle course of th...e Kuma river, southern Kyushu. The faunas include three species each of Montlivaltia, Thecosmilia and Procyclolities, two spceies of Thamnasteria, and one species each of Opppelismilia?, Elysastrea? and Conophyllia?. Two species of Thecosmilia and one species of Thamnasteria are new. Most of the escribed species show a close affinity to the corals of the Norian and Rhaetian Zlambach beds of Austria, the Upper Triassic of Timor and the Carno-Norian of the northwestern North America. The Konose’s Group is a thick conformable series of eugeosynclinal lithologic assemblage, typified by dominant submarine volcanic ejecta, chert and limestone and subordinate slate. The obtained fossils (fusulines, ammonoids etc. in addition to corals) reveal that it ranges in age from the Upper Permian to the Upper Triassic. Its Triassic part shows a remarkable contrast in facies to the correlatives of the Inner Side of Japan, which are predominantly clastic sediments of neritic, paralic and limnic basins.show more
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