Bivalvia - Arcida - Arcidae

Alternative combinations: Arca (Barbatia) cowlitzensis, Porterius cowlitzensis

Full reference: C. E. Weaver and K. Palmer. 1922. Fauna from the Eocene of Washington. University of Washington Publications in Geology 1(3):1-56

Belongs to Barbatia according to A. J. W. Hendy 2020

See also Hickman 2023, Reinhart 1943 and Weaver and Palmer 1922

Sister taxa: Arca (Barbatia) gracilicostata, Arca (Barbatia) nanggulanensis, Arca (Barbatia) oostinghi, Arca (Barbatia) tenuicrenata, Barbatia (Barbatia), Barbatia (Cucullaearca), Barbatia (Diluvarca), Barbatia (Granoarca), Barbatia (Hawaiarca), Barbatia (Mesocibota), Barbatia (Obliquarca), Barbatia aegyptiaca, Barbatia aptiensis, Barbatia aspera, Barbatia axinaea, Barbatia candida, Barbatia carolinensis, Barbatia consutilis, Barbatia corvamnis, Barbatia crustata, Barbatia culleni, Barbatia deusseni, Barbatia dissimilis, Barbatia foliata, Barbatia geinitzi, Barbatia gibba, Barbatia glyphus, Barbatia helblingi, Barbatia illota, Barbatia inglisia, Barbatia irregularis, Barbatia kayalensis, Barbatia landesi, Barbatia legayi, Barbatia lignitifera, Barbatia limatella, Barbatia ludoviciana, Barbatia malaiana, Barbatia marylandica, Barbatia mauryae, Barbatia meridiana, Barbatia mundeformata, Barbatia nodai, Barbatia paradiagona, Barbatia pistachia, Barbatia pseudoillota, Barbatia pumila, Barbatia quilonensis, Barbatia rembangensis, Barbatia seraperta, Barbatia simulans, Barbatia subtrigonalis, Barbatia sundaiana, Barbatia suzzalloi, Barbatia uxorispalmeri, Barbatia wendti

Type specimen: Its type locality is UW 329, which is in a Bartonian marine horizon in the Cowlitz Formation of Washington

Distribution: found only at UW 329

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Specimen images are retrieved through the ePANDDA API.