|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Rhynchonellata - Orthida - Platystrophiidae
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. Zhan 2000||Medium to relatively large, strongly convex to globular shells with shortened hingeline, strong, angular to subangular costae, well-defined ventral sulcus and dorsal fold. Interareas prominent, apsacline. Delthyrium open. Dental plates well developed. Septalium-like notothyrial platform supported dorsally by one or two ridges; cardinal process bladelike, uni- or trilobate.|