|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Rhynchonellata - Orthida - Plaesiomyidae
It was reranked as Orthis (Dinorthis) by Reed (1917); it was reranked as Plaesiomys (Dinorthis) by Klenina (1984).
It was assigned to Orthis by Reed (1917); to Dinorthidae by Alikhova (1953) and Oraspold (1959); to Plaesiomys by Klenina (1984); to Plaesiomyidae by Macomber (1970) and Popov et al. (2000); to Plaesiomyinae by Williams et al. (2000); and to Orthida by Sepkoski (2002).
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