Opinions from Z. Kovács 2011
- 'Ammonites alternatus is a subjective synonym of Harpoceras (Harpoceras) serpentinum'
- 'Ammonites capitanii belongs to Ammonites' according to Catullo 1847
- 'Ammonites capitanii is recombined as Calliphylloceras capitanii'
- 'Ammonites cornucopia is recombined as Lytoceras cornucopia'
- 'Ammonites crassus is recombined as Catacoeloceras crassum'
- 'Ammonites doderleinianus is recombined as Phylloceras doderleinianum'
- 'Ammonites falcifer is recombined as Harpoceras (Harpoceras) falciferum'
- 'Ammonites francisci is recombined as Lytoceras francisci'
- 'Ammonites francisci belongs to Ammonites' according to Oppel 1865
- 'Ammonites heterophyllus is recombined as Phylloceras heterophyllum'
- 'Ammonites levisoni is recombined as Hildaites levisoni'
- 'Ammonites murleyi is recombined as Hildaites murleyi'
- 'Ammonites nilssoni belongs to Ammonites' according to Hebert 1866
- 'Ammonites nilssoni is recombined as Calliphylloceras nilssoni'
- 'Ammonites ovatus is recombined as Ovaticeras ovatum'
- 'Ammonites serpentinus is recombined as Harpoceras (Harpoceras) serpentinum'
- 'Ammonites strangewaysi is recombined as Harpoceras (Harpoceras) strangewaysi'
- 'Ammonites subplanatus is recombined as Harpoceras (Harpoceras) subplanatum'
- 'Calliphylloceras propinquum belongs to Calliphylloceras' according to Geczy 1967
- 'Calliphylloceras propinquum belongs to Calliphylloceras'
- 'Catacoeloceras tuberculatum is recombined as Nodicoeloceras tuberculatum'
- 'Cingolites picenus belongs to Cingolites'
- 'Coeloceras choffati belongs to Coeloceras' according to Renz 1912
- 'Coeloceras choffati is recombined as Nodicoeloceras choffati'
- 'Coeloceras mediterranea belongs to Coeloceras' according to Renz 1912
- 'Coeloceras mediterranea is recombined as Mesodactylites mediterraneus'
- 'Harpoceras (Polyplectus) pluricostata is recombined as Polyplectus pluricostatus'
- 'Harpoceras douvillei is recombined as Orthildaites douvillei'
- 'Harpoceras fontanellense is recombined as Fontanelliceras fontanellense'
- 'Harpoceras mediterraneum is recombined as Harpoceras (Harpoceras) mediterraneum'
- 'Harpoceras pseudoserpentinum is recombined as Harpoceras (Harpoceras) pseudoserpentinum'
- 'Harpoceras subexaratum is recombined as Harpoceras (Harpoceras) subexaratum'
- 'Hildaites pseudolevisoni belongs to Hildaites' according to Venturi 1981
- 'Hildaites pseudolevisoni belongs to Hildaites'
- 'Hildaites serpentiniformis belongs to Hildaites'
- 'Hildaites striatus belongs to Hildaites'
- 'Hildaites subserpentinus belongs to Hildaites'
- 'Hildoceras undicosta is recombined as Hildaites undicosta'
- 'Mercaticeras crassum belongs to Mercaticeras' according to Guex 1973
- 'Mercaticeras crassum is recombined as Hildaites crassus'
- 'Murleyiceras forte is recombined as Hildaites forte'
- 'Orthildaites becaudi belongs to Orthildaites'
- 'Orthodactylites directus belongs to Orthodactylites' according to Buckman 1926
- 'Orthodactylites directus is recombined as Dactylioceras (Orthodactylites) directum'
- 'Orthodactylites mitis belongs to Orthodactylites' according to Buckman 1927
- 'Orthodactylites mitis is a subjective synonym of Dactylioceras (Orthodactylites) directum'
- 'Phylloceras spadae belongs to Phylloceras' according to Meneghini 1875
- 'Phylloceras spadae is recombined as Calliphylloceras spadae'
- 'Protogrammoceras wrighti is recombined as Hildaites wrighti'