†subfamily Pseudactinoceratinae Schindewolf 1943 (mollusk)
Parent taxon: Pseudorthoceratidae according to C. Teichert et al. 1964
Sister taxa: Buchanoceras, Cayutoceratinae, Dinocycloceras, Dolorthoceras, Geidoloceras, Hebetorthoceras, Houdongoceras, Mitorthoceras, Mongoceras, Neocycloceras, Probatoceras, Pseudorthoceratinae, Subdoloceras, Subormoceras, Uralorthoceras
Subtaxa: Bergoceras Campyloceras Eusthenoceras Macroloxoceras Paraloxoceras Pseudactinoceras
Ecology: fast-moving nektonic carnivore
Distribution:
• Carboniferous of Ireland (1 collection), Kazakhstan (1)
Total: 2 collections each including a single occurrence