|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Bivalvia - Carditida - Carditidae
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.
|B. Kensley and J. Pether 1986||Shell robust, thick, oblong, anterior margin rounded, ventral margin flattened, posterior margin more pointed than anterior. External sculpture consisting of 27 radiating ribs, becoming broadly flattened near ventral margin, separated by narrow grooves; ribs on posterior part of shell narrower than on rest of shell. Concentric growth lines irregular, wavy. Lower anterior and posterior margin and ventral margin on shell interior crenulate, crenulations largest at posteroventral corner. Anterior adductor scar oval; small circular hollow dorsal to anterior muscle scar, hidden under anterior hinge line. Posterior adductor scar anteriorly truncate, posteriorly rounded. Hinge line broad, solid; anterior lateral tooth almost vertical, short, separated from anterior cardinal tooth by triangular pit; anterior cardinal tooth acutely triangular with posterior margin twice length of anterior margin, separated from posterior cardinal tooth by narrowly triangular oblique groove; posterior cardinal tooth elongate, with horizontal dorsal part and oblique ventral part. Ventral margin of hinge area sinuous.|