|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Bivalvia - Lucinida - Lucinidae
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.
|R. von Cosel 2006||Shells medium-sized, subcircular, slightly longer than high, rather compressed. Beaks in front of the vertical midline. Surface with thin commarginal lamellae or cords only on the earlier part of the valves, becoming obsolete and then absent ventrally. Rest of the valves with growth lines and some coarser “growth stages”. Anterior area with two shallow radial depressions, anterior angle indistinct. Postero-dorsal area indistinct and not separated by a visible posterior angle. Lunule long, narrow, slightly asymmetrical, sunken. escutcheon long, narrow and sunken, delimited by a sharp and prominent, narrowly laminate keel, but no long lamellate prolongations. Hinge arched, in the right valve with one well developed cardinal tooth and sometimes the vestiges of a posterior cardinal, and anterior and posterior laterals. Left valve with two cardinals and well marked anterior and posterior laterals. Anterior adductor scar rather elongate, with moderately long diverging part, pallial line meeting the scar in about its middle or just above it. Posterior adductor scar small. Inner margins smooth.|