|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Cephalopoda - Actinocerida - Armenoceratidae
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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.
|C. H. Holland and P. Copper 2008||Maximum length 72 mm, average diameter ca. 40 mm; rate of increase about 158. Foerste found nearly nine camerae in a length equal to conch diameter, but his illustration (pl. 46, fig. 1) suggests a figure closer to seven, and the new material suggests less than this. Septa direct, concave to ca. 1.5 camerae; siphuncle <40% of conch diameter, eccentrically placed; two and a half segments occur within a length equal to diameter; their outline is convex.|