The kossmaticeratid ammonite Kaiparaites was on its inceptionsynonymized by its author (Matsumoto 1955)with Natalites (Collignon1954). However, close comparison of the type species of these two genera showsthem to be morphologically and stratigraphically distinct. Whereas SantonianNatalites shares the flexed constrictions of late Turonian–ConiacianKossmaticeras, the straight constrictions of late Campanian –Maastrichtian Kaiparaites are shared with Caledonites,Gunnarites, Grossouvrites andJacobites. Consequently, Kaiparaites is resurrectedfrom the synonymy of Natalites and demonstrates that, under phylogeneticconsideration, characters first thought to be of prime taxonomic significance actuallyturn out to be secondary. Since treatment of Natalites as a subgenus ofKossmaticeras emphasizes... primitive characters, it is returned togeneric rank, as is Santonian Karapadites although, for those who finduse for subgenera, the latter can be treated as a subgenus ofNatalites.