DOIS BIVALVES DE OHIO,USA.

Strophitus undulatus undulatus (Say,1817)
Olentangy River,Marion County,Ohio,USA.
No further collecting information
Siza:70,7 mm

Elliptio dilatata (Rafinesque,1820)
Gand River,Ashtabula County,Ohio USA.
No further collecting information.
Size: 112,4 mm

Elliptio dilatata (Rafinesque,1820)