|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Lingulata - Lingulida - Discinidae
It was assigned to Orbiculoideinae by Wright (1963), Mitchell (1977), Holmer (1986), Holmer (1989) and Popov (2000); to Acrotretida by Sepkoski (2002); to Disciniidae by Williams et al. (2000) and Zhan and Jin (2005); and to Discinidae by Hansen and Holmer (2011).
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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.