|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Strophomenata - Strophomenida - Aegiromenidae
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.
|L. E. Popov and L. R. M. Cocks 2014||Shell gently concavoconvex, with transverse profile of the ventral valve strongly curved in the anterior one-third. Radial ornament multicostellate, becoming weakly parvicostellate close to the outer shell margins, with 10–11 ribs per mm. Dorsal interior with a long, blade-like dorsal median septum, and numerous small, radially arranged septules outside the adductor muscle field.|