|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Strophomenata - Orthotetida - Areostrophiidae
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. G. Johnson 1970||The genus is characterized by its irregular biconvex shape, its ornament of fine irregular striae, moderately high triangular interarea, and complete pseudodeltidium in the pedicle valve; and by its posteriorly directed bilobed cardinal process in the brachial valve.|