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Protogrammoceras pristinum

Cephalopoda - Ammonoida - Hildoceratidae

Taxonomy

No taxonomic data are available

Sister species
Fuciniceras (Paltarpites) aequiondulatum, P. (Argutarpites) meneghinii (syn. Harpoceras denseornatum), P. (Paltarpites) gabillyi, P. (Paltarpites) madagascariense, P. (Paltarpites) paltum, P. bassanii (syn. Bassaniceras infidum), P. ionicus, P. normanianum, P. pseudodilectum, P. serotinum, P. sublaeve, P. thevenini
Sister species lacking formal opinion data
P. bonarellii, P. costicillatum, P. exigum, P. falcicostatum, P. nipponicum, P. normannianum, P. varicostatum, P. compressum, P. tipperi, P. tipperi, P. veliferum