|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Trilobita - Phacopida - Encrinuridae
It was reranked as Erratencrinurus (Celtencrinurus) by Owen (1981) and Owen and Heath (1989).
It was assigned to Erratencrinurus by Owen (1981) and Owen and Heath (1989); to Phacopida by Sepkoski (2002); and to Encrinuridae by Jell and Adrain (2003).
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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.