|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Gastropoda - Architectibranchia - Acteonidae
It was assigned to Acteonininae by Sohl (1964); to Acteoninae by Kase (1984); to Cephalaspida by Sepkoski (2002); and to Acteonidae by Beu et al. (1990), Kaim (2004) and Gründel and Nützel (2012).
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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.
|J. Gründel and A. Nützel 2012||The shell is relatively high-spired. The protoconch (not known from type species) is medioaxial to almost coaxial, consisting of one to two visible whorls. The teleoconch whorls have or have not a narrow subsutural ramp. The ornament consists of spiral furrows with variable number and spacing. The intersection of growth lines and furrows produce oval pits in the furrows. The growth lines are almost straight, orthocline on whorl flanks, not or only weakly backward curving adapically. They are weakly prosocyrt on the base. The aperture is oval. The outer lip is convex and has an inner thickening or dentations (not seen in Jurassic species). The inner lip bears two distinct columellar folds.|