|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Rhynchonellata - Pentamerida - Camerellidae
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 et al. 2005||Shell subtriangular, almost equally biconvex, about half as thick as long; radial ornament paucicostate, 6–11 ribs originating about 3 mm from the umbo; ventral interior with narrow spondylium supported anteriorly by low median septum; dorsal interior with short brachial processes and septalium supported by a long median septum exceeding 2 mm in adult specimens.|