Tresus keenae (Kuroda et Habe)
Species	Mollusca - Bivalvia (Pelecypoda) - Heterodonta - Mactridae
Place	Inba-Mura, Chiba-Pref., Japan
Epoch	Cenozoic - Quaternary - Pleistocene
Size	Width 17.5 cm, Height 12.0 cm
File No.	IB001
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