|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Lingulata - Siphonotretida - Siphonotretidae
It was assigned to Acanthamboniinae by Wright (1963), Holmer (1986), Popov and Nolvak (1987) and Holmer (1989); to Acrotretida by Sepkoski (2002); and to Siphonotretidae by Williams et al. (2000) and 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.