Bivalvia (Mya japonica, JAY)
Goroku, Aoba-ku, Sendai city, Miyagi pref., Japan
Early Pliocene, Neogene, Cenozoic (5 Ma)
Width: 120 mm. Bivalvia recovered from tuffaceous sandstone near a shell bed of Tatsunokuchi Formation, marine sediments in the bay in a cool climate. Fossils are associated with a lot of fine Beta-Quartz in the host sandstone.