Tresus nuttallii Conrad 1837 (Pacific gaper)

Bivalvia - Cardiida - Mactridae

Alternative combinations: Lutraria (Cryptodon) nuttallii, Schizothaerus nuttalli, Schizothaerus nuttallii, Tresus nuttalli

Synonyms: Lutraria inflata Dunker 1853, Spisula longa Dall 1921

Belongs to Tresus according to A. Hendy 2021

See also Addicott 1966, Ashley 1895, Coan et al. 2000, Conrad 1855, Moore 2003, Signorelli 2019, Valentine 1957 and Woodring and Bramlette 1950

Sister taxa: Tresus allomyax, Tresus capax, Tresus pajaroanus, Tresus saxadomoides, Schizothaerus trapezoides

Subtaxa: Schizothaerus nuttallii bighopensis

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Type specimens:

Ecology: facultatively mobile infaunal suspension feeder

Distribution:

• Quaternary of Mexico (7 collections), United States (77: California, Washington)

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

• Pliocene of United States (32: California)

• Miocene to Pliocene of United States (10: California)

• Miocene of Argentina (3), United States (9: California)

Total: 141 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.


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