PBDB

Opinions from W. J. Kennedy et al. 2000

'Anaklinoceras belongs to Nostoceratidae'
'Ancyloceras (Hamites) uncus belongs to Ancyloceras (Hamites)' according to Meek and Hayden 1858
'Ancyloceras (Hamites) uncus is recombined as Didymoceras uncus'
'Ancyloceras approximans is recombined as Nostoceras approximans'
'Ancyloceras cheyenensis is recombined as Turrilites cheyenensis' according to Meek and Hayden 1856
'Ancyloceras cheyenensis is recombined as Helicoceras cheyenense' according to Meek and Hayden 1860
'Ancyloceras cheyenensis is recombined as Didymoceras cheyenense'
'Ancyloceras jenneyi belongs to Ancyloceras' according to Whitfield 1877
'Ancyloceras jenneyi is recombined as Exiteloceras jenneyi'
'Ancyloceras nebrascensis is recombined as Didymoceras nebrascense'
'Ancyloceras nebrascensis is recombined as Turrilites nebrascensis' according to Meek and Hayden 1856
'Ancyloceras nebrascensis is recombined as Helicoceras nebrascense' according to Meek and Hayden 1860
'Ancyloceras nebrascensis is recombined as Heteroceras nebrascense' according to Stanton 1888
'Ancyloceras nebrascensis is recombined as Nostoceras (Didymoceras) nebrascense' according to Wright 1996
'Ancyloceras nebrascensis is recombined as Cirroceras nebraskense' according to Wright 1957
'Ancyloceras nicolletii belongs to Ancyloceras' according to Hall and Meek 1856
'Ancyloceras nicolletii is recombined as Didymoceras nicolletii'
'Ancyloceras tricostatus is recombined as Didymoceras tricostatus'
'Ancyloceras tricostatus belongs to Ancyloceras' according to Whitfield 1897
'Axonoceras belongs to Nostoceratidae'
'Bostrychoceras belongs to Nostoceratidae'
'Cirroceras belongs to Nostoceratidae'
'Didymoceras belongs to Nostoceratidae'
'Didymoceratoides is a subjective synonym of Didymoceras'
'Didymoceratoides binodosum belongs to Didymoceratoides' according to Kennedy and Cobban 1993
'Didymoceratoides binodosum is recombined as Didymoceras binodosum'
'Emperoceras is a subjective synonym of Didymoceras'
'Emperoceras beecheri belongs to Emperoceras' according to Hyatt 1894
'Emperoceras beecheri is a subjective synonym of Didymoceras nebrascense'
'Eubostrychoceras belongs to Nostoceratidae'
'Exiteloceras belongs to Nostoceratidae'
'Hamites annulifer is recombined as Solenoceras annulifer'
'Helicoceras angulatum belongs to Helicoceras' according to Meek and Hayden 1860
'Helicoceras angulatum is recombined as Didymoceras angulatum'
'Helicoceras navarroensis is recombined as Didymoceras navarroensis'
'Helicoceras stevensoni is recombined as Didymoceras stevensoni'
'Helicoceras tenuicostatus belongs to Helicoceras' according to Meek and Hayden 1858
'Helicoceras tenuicostatus is recombined as Didymoceras tenuicostatus'
'Helicoceras tortus is recombined as Didymoceras tortus'
'Helicoceras tortus belongs to Helicoceras' according to Meek and Hayden 1858
'Heteroceras newtoni belongs to Heteroceras' according to Whitfield 1877
'Heteroceras newtoni is recombined as Didymoceras newtoni'
'Heteroceras simplicostatum is recombined as Emperoceras simplicostatum' according to Wright 1957
'Emperoceras simplicostatum is a subjective synonym of Didymoceras nebrascense'
'Heteroceras simplicostatum belongs to Heteroceras' according to Whitfield 1902
'Heteroceras simplicostatum is recombined as Emperoceras simplicostatum' according to Wright 1957
'Heteroceras vespertinus belongs to Heteroceras' according to Conrad 1874
'Heteroceras vespertinus is recombined as Didymoceras vespertinus'
'Jouaniceratidae is a subjective synonym of Nostoceratidae'
'Nostoceras belongs to Nostoceratidae'
'Nostoceras (Nostoceras) monotuberculatum belongs to Nostoceras (Nostoceras)' according to Kennedy and Cobban 1993
'Nostoceras (Nostoceras) monotuberculatum is recombined as Nostoceras monotuberculatum'
'Nostoceras arkanasanum belongs to Nostoceras' according to Kennedy and Cobban 1993
'Nostoceras arkanasanum belongs to Nostoceras'
'Nostoceras colubriformis belongs to Nostoceras'
'Nostoceras danei belongs to Nostoceras' according to Kennedy and Cobban 1993
'Nostoceras danei belongs to Nostoceras'
'Nostoceras draconis belongs to Nostoceras'
'Nostoceras hyatti belongs to Nostoceras'
'Nostoceras mendryki belongs to Nostoceras' according to Cobban 1974
'Nostoceras mendryki belongs to Nostoceras'
'Nostoceras platycostatum belongs to Nostoceras' according to Kennedy and Cobban 1993
'Nostoceras platycostatum is recombined as Didymoceras platycostatum'
'Nostoceras pleurocostatum belongs to Nostoceras' according to Kennedy and Cobban 1993
'Nostoceras pleurocostatum belongs to Nostoceras'
'Nostoceras pulcher belongs to Nostoceras' according to Kennedy and Cobban 1993
'Nostoceras pulcher belongs to Nostoceras'
'Nostoceras stantoni belongs to Nostoceras'
'Nostoceratidae belongs to Turrilitaceae'
'Oxybeloceras belongs to Polyptychoceratinae'
'Polyptychoceratinae belongs to Diplomoceratidae'
'Ptychoceras crassum is recombined as Oxybeloceras crassum'
'Ptychoceras meekanum is recombined as Spiroxybeloceras meekanum'
'Solenoceras belongs to Polyptychoceratinae'
'Solenoceras bearpawense belongs to Solenoceras'
'Solenoceras elegans belongs to Solenoceras'
'Solenoceras larimerense belongs to Solenoceras'
'Spiroxybeloceras belongs to Polyptychoceratinae'
'Turrilitaceae belongs to Ancyloceratina'
'Turrilites alternatus belongs to Turrilites' according to Tuomey 1854
'Turrilites alternatus is recombined as Nostoceras alternatus'
'Turrilites cochleatus is recombined as Didymoceras cochleatus'
'Turrilites helicinus is recombined as Nostoceras helicinus'
'Turrilites pauper is recombined as Nostoceras pauper'
'Turrilites saundersorum belongs to Turrilites' according to Stephenson 1941
'Turrilites saundersorum is recombined as Nostoceras saundersorum'
'Turrilites splendidus belongs to Turrilites' according to Shumard 1861
'Turrilites splendidus is recombined as Nostoceras splendidus'
'Turrilites umbilicatus belongs to Turrilites' according to Meek and Hayden 1858
'Turrilites umbilicatus is recombined as Didymoceras umbilicatus'