|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Rhynchonellata - Orthida - Schizophoriidae
It was reranked as Orthis (Schizophoria) by Reed (1944).
It was assigned to Orthis by Reed (1944); to Orthida by Sepkoski (2002); and to Schizophoriidae by Williams et al. (2000) and Stigall Rode (2005).
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.
|A. L. Stigall Rode 2005||Transversely semioval, weakly uniplicate valves;
ventral interior with strong teeth and dental plates extending
forward as ridges laterally confining the muscle field;
dorsal interarea with prominent, crenulated cardinal process
(Harper 2000). For additional characters see Pocock (1966)
and Jansen (2001).