†Cryptoclymenia (ammonite)
Parent taxon: Goniatitida according to J. J. Sepkoski 2002
Sister taxa: Aphanites, Cravenites, Cyclolobina, Goniatitina, Gordonites, Mezorulganites, Prehoffmannia, Schuichengoceras, Subshumardites, Terektites, Thallassoceras, Tornoceratina, Trigonogastrioceras, Unquatornoceras
Subtaxa: none
Ecology: fast-moving nektonic carnivore