|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Tergomya - Cyrtonellida - Cyrtolitidae
It was assigned to Bellerophontacea by Knight et al. (1960); to Sinuitopsida by Starobogatov (1970); to Helcionellacea by Runnegar and Jell (1976); to Cyrtonellacea by Horný (1992) and Wahlman (1992); to Gastropoda by Frýda (1999); and to Cyrtonellida by Ebbestad and Yochelson (2000).
Is something missing? Join the Paleobiology Database and enter the data
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.