A new species of Neoberingius (Gastropoda: Buccinidae) from the Lower Miocene Morozaki Group in Aichi Prefecture, central Japan

抄録

Neoberingius minamichitaensis sp. nov. is described from the upper Lower Miocene Yamami Formation (Morozaki Group) in Utsumisanbi, Minamichita-cho, Chita-gun, Aichi Prefecture and Utsumi Formation (Morozaki Group) in Akanotani, Noma, Mihama-cho, Chita-gun, Aichi Prefecture. This species can be inferred to have lived on the muddy bottom of the bathyal zone. Neoberingius and its related genus Beringius fossils are rare, and this is the first report of their discovery in Aichi Prefecture, central Japan which is thought to represent the southern limit of Neoberingius fossils. It has been revealed that during the Early Miocene, the distribution of Neoberingius expanded from around Kamchatka to the deep waters of present-day Aichi Prefecture, Japan. The discovery of this species is regarded as crucial for understanding the migration, distribution, and evolution of this genus.