|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Bivalvia - Cardiida - Veneridae
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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.
|U. S. Grant and H. R. Gale 1931||Anterior dorsal margin not descending abruptly but extendmg outward for a short distance
almost parallel to the ventral margin, the anterior extremity regularly and strongly curved.