835. ON THE SILURIAN TRILOBITE FAUNULE OF HITOEGANE NEAR FUKUJI IN THE HIDA PLATEAU, JAPAN

Abstract

A new collection from Hitoegane adjacently north of Fukuji, Gifu Prefecture contains more than nine species of trilobites in the Scutelluidae, Illaenidae (?), Proetidae, Cheiruridae and Encrinuridae, including four new species, namely Kosovopeltis hidensis, Proetus (Coniproetus) tenuiceps, P. (Coniproetus?) subconicus and Cheirurus hitoeganensis. This faunule is late or middle Ludlovian in age and shows affinities to the East Australian fauna through the Yokokura-yama, Shikoku and the Bohemian fauna through the trilobites of the Mongolian geosyncline. Encrinurus cf. similis found at Hakubado, Fukui Prefecture is about the same age.