Anadara sp., cf. A. diluvii

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Anadara sp. cf. A. diluvii 
(Lamark 1805).
 Plio-Pleistocene, Province of Pisa, Italy. Scale is in millimeters. Compare with A. floridana, a Florida species. A. diluvii is less elongated and is closer to square than rectangular; the umbo in A. diluvii is also nearer the center of each valve.

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