|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Bivalvia - Cardiida - Cardiidae
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.
|E. V. Coan et al. 2000||Shell inflated, subequilateral. Sculpture of strong radial ribs, triangular in cross
section, never tubercular, becoming more widely spaced anteriorly. Periostracum
thick, with radial rows of setae on rib peaks.