Bivalvia - Cardiida - Veneridae

Full reference: K. Oyama and A. Mizuno. 1958. n the New Forms of Paleogene Molluscs from Japan. Bulletin of the Geological Survey of Japan 9:589-606

Belongs to Pitar according to K. Oyama and A. Mizuno 1958

Sister taxa: Meretrix (Pitar) dalikiensis, Pitar (Calpitaria), Pitar (Chionella), Pitar (Cordiopsis), Pitar (Costellipitar), Pitar (Hyphantosoma), Pitar (Lamelliconcha), Pitar (Nanopitar), Pitar (Paradione), Pitar (Pitar), Pitar (Pitar) nuttali, Pitar (Pitarenus), Pitar (Pitarina), Pitar albidus, Pitar baylii, Pitar cedroensis, Pitar colchaguana, Pitar cordatus, Pitar mancorensis, Pitar morrhuanus, Pitar petropolitanus, Pitar porrecta, Pitar rostratus, Pitar salanga, Pitar sciaena, Pitar securiformis, Pitar simpsoni, Cytherea (Caryatis) pratti

Type specimen: GSJ 5021, a shell

Ecology: facultatively mobile infaunal suspension feeder

Average measurements (in mm): shell 50.0 x 44.4