Cephalopoda - Ammonitida - Hildoceratidae

Full reference: R.W. Imlay. 1968. Lower Jurassic (Pliensbachian and Toarcian) Ammonites From Eastern Oregon and California . Geological Survey Professional Paper 593-C :pp. 51

Belongs to Protogrammoceras according to R.W. Imlay 1968

Sister taxa: Protogrammoceras (Fieldingiceras), Protogrammoceras (Matteiceras), Protogrammoceras (Protogrammoceras), Protogrammoceras bassanii, Protogrammoceras ionicus, Protogrammoceras meneghini, Protogrammoceras normanianum, Protogrammoceras pseudodilectum, Protogrammoceras serotinum, Protogrammoceras sublaeve, Protogrammoceras thevenini, Protogrammoceras (Argutarpites) meneghinii, Protogrammoceras (Paltarpites) paltum, Protogrammoceras (Paltarpites) madagascariense, Protogrammoceras (Paltarpites) gabillyi, Fuciniceras (Paltarpites) aequiondulatum

Type specimen: CAS 12790

Ecology: fast-moving nektonic carnivore

Distribution: there are no occurrences of Protogrammoceras ochocoense in the database

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Specimen images are retrieved through the ePANDDA API.