Bulletin of the Mizunami Fossil Museum No. 48
Discovery of Epistrenoceras sp. (Ammonoidea) from the Middle Jurassic Series in Fukui Prefecture, Central Japan
- BMFM48-012Goto&Sakai（PDF 4.34MB）
- BMFM48-012Goto&Sakai-s（PDF 0.79MB）
Goto & Sakai (2021) print-version
Goto & Sakai (2021) small-version
Published: 2021/12/26 Page: 119–126
Epistrenoceras sp. was newly found from the Lower Formation of the Kuzuryu Group, Fukui Prefecture in Central Japan. This genus occurs from the early Late Bathonian age in the Tethys Province and the southeastern Panthalassa. This is the first record of this genus in Japan. It indicates that the age of the Lower Formation of the Kuzuryu Group can be determined for the first time following the late Late Bathonian in age represented by Pseudoneuqueniceras yokoyamai from the Middle Formation of the Kuzuryu Group. The first occurrence in East Asia indicates that the habitat of this genus extended to western Panthalassa Ocean.