Cephalopoda - Ammonitida - Hildoceratidae
Parent taxon: Protogrammoceras according to M. K. Howarth 2013
See also Hillebrandt 2006 and Smith and Tipper 1996
Sister taxa: Protogrammoceras (Fieldingiceras), Protogrammoceras (Matteiceras), Protogrammoceras bassanii, Protogrammoceras ionicus, Protogrammoceras normanianum, Protogrammoceras pseudodilectum, Protogrammoceras serotinum, Protogrammoceras sublaeve, Protogrammoceras thevenini, Protogrammoceras (Argutarpites) meneghinii, Protogrammoceras (Paltarpites) madagascariense, Protogrammoceras (Paltarpites) gabillyi, Protogrammoceras (Paltarpites) paltum, Fuciniceras (Paltarpites) aequiondulatum
Subtaxa: Protogrammoceras (Protogrammoceras) depressum Protogrammoceras (Protogrammoceras) kurrianum Protogrammoceras (Protogrammoceras) occidentale Protogrammoceras (Protogrammoceras) skidegatense Protogrammoceras (Protogrammoceras) turgidulum
Ecology: fast-moving nektonic carnivore
Distribution: