|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Tergomya - Cyrtonellida - Cyrtolitidae
It was reranked as Bellerophon (Cyrtolites) by Perner (1903).
It was assigned to Bellerophon by Perner (1903); to Cyrtolitidae by Knight et al. (1960), Runnegar and Jell (1976) and Wahlman (1992); and to Cyrtonellida by Sepkoski (2002).
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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.