足尾山地より発見したコノドントについて

概要

論文の詳細を見る
During the geologic investigation in 1959, the author fortunately found many conodonts from the Palaeozoic beds at the western part of Ashio mountain. Among them, 18 genera and 7 assemblages are reported in this papaer. This is the first discovery of conodonts in Japan. Though it is said that fossils are generally rare in the Palaeozoic rocks except for the limestone, it becomes clear by the author's discovery that many kinds of conodonts are included in such rocks, as basaltic tuffite, tuffaceous slate and chert. Therefore, conodonts may become the leadingfossils in the formations hitherto remained unfossiliferous.
地学団体研究会の論文
1963-09-25