抄録
Fossil molluscs from the Ena, Shikura and Shirakawa limestones within the Middle Miocene Sakurada Formation (Yugashima Group) on the Izu Peninsula, central Japan represent the tropical shallow marine community lived around a volcanic island(s) that located at latitudes much lower than the present. A new gastropod species, Astralium ena, is described from the Ena Limestone. This new species is distinct from the most similar species Astralium verbeeki Icke from the Lower Miocene of Nias in Indonesia by the higher shell profile, more impressed suture, thicker axial ribs and more number of spiral cords on the base. This is the second species of the genus Astralium recognized from the Miocene of Japan.
https://ror.org/04chrp450 
