|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Cephalopoda - Ammonitida - Ptychoceratidae
It was reranked as Hemiptychoceras (Ptychoceras) by Kennedy (1994).
It was assigned to Hemiptychoceras by Kennedy (1994); to Ammonoidea by Sepkoski (2002); and to Ptychoceratidae by Henderson (1990), Kakabadze and Hoedemaeker (1997), Landra et al. (2000) and Klein et al. (2007).
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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.