Tresus Gray 1853 (clam)

Bivalvia - Cardiida - Mactridae

Synonym: Schizothaerus Conrad 1853

Parent taxon: Lutrariinae according to E. J. Moore 2003

See also Abbott 1974 and Sepkoski 2002

Sister taxa: Heterocardia, Lutraria, Lutromactra, Meropesta

Subtaxa: Schizothaerus trapezoides Tresus capax Tresus nuttallii Tresus pajaroanus Tresus saxadomoides

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Ecology: facultatively mobile infaunal suspension feeder

Distribution:

• Quaternary of Japan (2 collections), Mexico (7), United States (58: California, Washington)

• Pliocene to Pleistocene of United States (3: California)

• Pliocene of United States (25: California, Oregon)

• Miocene to Pliocene of United States (11: California)

• Miocene of United States (7: California)

• Oligocene of United States (3: Alaska, California)

Total: 116 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.


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