|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Lingulata - Acrotretida - Ephippelasmatidae
It was assigned to Acrotretinae by Wright (1963); to Ephippelasmatinae by Holmer (1986) and Holmer (1989); to Ephippelasmatidae by Williams et al. (2000) and Popov (2000); and to Acrotretida by Sepkoski (2002).
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.