|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Cephalopoda - Ammonitida - Haploceratidae
It was assigned to Haploceratidae by Arkell et al. (1957), Avram and Gradinaru (1993), Zeiss et al. (1994), Wright et al. (1996) and Arkadiev et al. (2000); and to Ammonoidea 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.