|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Strophomenata - Strophomenida - Strophomenidae
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.
|J. Jin and R.-b. Zhan 2001||Shell usually large to very large, subtriangular to subpentagonal in outline, strongly resupinate and broadly geniculate, bearing concentric to crisscross rugae over part or entire shell. Ventral interior like Strophomena; dorsal interior different from Strophomena in having usually shorter and weaker transmuscle septa.|