A new Miocene Tindaria (Bivalvia: Tindariidae) from central Honshu, Japan

A new species of tindariid bivalve, Tindaria hamuroi new species, is described from the upper lower Miocene Higashibessho Formation in central Honshu, Japan which was deposited in lower sublittoral to upper bathyal settings. This is the first case of the fossil occurrence of an elongate ovate shell-type Tindaria. Among the fossil and extant species of Tindaria, Tindaria hamuroi new species is the only species from the Japan Sea side of Japan. Other than Tindaria, the nucinellid Nucinella, the malletiid Malletia, the mytilid Bathymodiolus (s. l.), the cuspidariid Myonera, and the vesicomyids Pliocardia and Calyptogena became extinct in the Japan Sea.