Protocardia (Pachycardium) Conrad 1869 (cockle)

Bivalvia - Cardiida - Cardiidae

Alternative spelling: Pachycardium

Parent taxon: Protocardia according to J. A. Schneider 1995

See also Kosnik 2002, Popenoe 1937, Sepkoski 2002 and Vokes 1980

Sister taxa: Cardium (Protocardia) arkansense, Cardium (Protocardia) pauli, Cardium (Protocardium) granuliferum, Protocardia (Grypocardia), Protocardia (Leptocardia), Protocardia (Protocardia), Protocardia (Tamilicardia), Protocardia alcesiana, Protocardia buckmani, Protocardia costaricensis, Protocardia dufrenoyca, Protocardia eduliformis, Protocardia gambrina, Protocardia hillana, Protocardia intexta, Protocardia lingulata, Protocardia luggudensis, Protocardia newberryana, Protocardia peregrinorsa, Protocardia pesolina, Protocardia philippiana, Protocardia piettei, Protocardia placerensis, Protocardia pulchella, Protocardia qinghaiensis, Protocardia razavii, Protocardia rhaetica, Protocardia salrivalis, Protocardia somaliensis, Protocardia stantoni, Protocardia striatula, Protocardia stricklandi, Protocardia subquadrata, Protocardia translucida, Protocardia truncata, Protocardia umkwelanensis, Protocardia virginiana, Protocardium (Brevicardium)

Subtaxa: Pachycardium coronaensis Pachycardium remondianum

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Ecology: facultatively mobile infaunal suspension feeder

Distribution:

• Cretaceous of Brazil (1 collection), India (1), Madagascar (1), United States (67: Alabama, Arkansas, California, Georgia, Maryland, Mississippi, Missouri, New Jersey, North Carolina, South Carolina, Texas)

Total: 70 collections including 72 occurrences

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