|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Bivalvia - Cardiida - Cardiidae
It was reranked as Trigoniocardia (Americardia) by Palmer and Brann (1965) and Dockery (1982).
It was assigned to Trigoniocardia by Palmer and Brann (1965) and Dockery (1982); to Veneroida by Sepkoski (2002); to Fraginae by Rosenberg (2005); and to Cardiidae by Powell (2008).
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.