Classification of the subfamily Hammatoceratinae
Subfm. †Hammatoceratinae Buckman 1887
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G. †Bredyia
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†Bredyia brancoi Prinz 1904
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Invalid names: Hammatoceras lotharingicum Benecke 1905 [synonym], Parammatoceras boyeri Elmi 1963 [synonym]
†Bredyia rugata Buckman 1925
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Invalid names: Hammatoceras dolium Buckman 1889 [replaced], Hammatoceras prinzi Geczy 1966 [synonym]
†Bredyia subinsignis Oppel 1856
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Invalid names: Burtonia crassornata Buckman 1910 [synonym], Hammatoceras dumortieri Prinz 1904 [synonym], Hammatoceras vighi Geczy 1966 [synonym]
Invalid names: Burtonia Buckman 1910 [replaced], Pseudammatoceras [synonym]
G. †Crestaites Rulleau and Elmi 2001
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†Crestaites goyi Martinez 1992
†Crestaites meneghinii Bonarelli 1899
†Crestaites raricostatus Geczy 1966
†Crestaites szentei Kovács 2009
G. †Erycitoides Westermann 1964
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†Erycitoides spinatus Westermann 1964
Invalid names: Kialagvikes Westermann 1964 [synonym]
G. †Euaptetoceras
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†Eudmetoceras (Euaptetoceras) nucleospinosum Westermann 1964
Invalid names: Ceccaites Cresta 1997 [synonym], Csernyeiceras Géczy 1966 [synonym], Parammatoceras [synonym]
G. †Eudmetoceras
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Subg. †Eudmetoceras (Eudmetoceras) Buckman 1920
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†Eudmetoceras (Eudmetoceras) eudmetum Buckman 1920
†Eudmetoceras flexuosum Elmi 1963
Invalid names: Rhodaniceras Elmi 1963 [synonym]
G. †Onychoceras Wunstrorf 1905
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†Onychoceras confertissimum Whitfield 1936
†Onychoceras differens Wunstorf 1907
G. †Paviaites Cresta 2002
G. †Planammatoceras
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Subg. †Planammatoceras (Planammatoceras) Buckman 1922
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†Planammatoceras (Planammatoceras) gerthi Jaworski 1926
†Planammatoceras kochi Prinz 1904
†Planammatoceras planiforme Buckman 1922
†Planammatoceras planinsigne Vacek 1886
†Planammatoceras tenuinsigne Vacek 1886
G. †Pseudaptetoceras Géczy 1966
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†Eudmetoceras (Euaptetoceras) klimakomphalum discoidale Westermann 1969
†Planammatoceras (Pseudaptetoceras) moerickei Jaworski 1926
†Planammatoceras (Pseudaptetoceras) tricolore Westermann and Riccardi 1982
†Pseudaptetoceras amaltheiforme Vacek 1886
†Pseudaptetoceras klimakomphalum Vacek 1886
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Invalid names: Deltotoceras corroyi Gerard 1930 [synonym], Hammatoceras discus Merla 1902 [synonym]
G. †Puchenquia
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Subg. †Puchenquia (Gerthiceras) Westermann and Riccardi 1982
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†Puchenquia (Gerthiceras) compressa Westermann and Riccardi 1982
†Puchenquia (Gerthiceras) mendozana Westermann and Riccardi 1982
Subg. †Puchenquia (Puchenquia) Westermann and Riccardi 1972
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†Puchenquia (Puchenquia) malarguensis Burckhardt 1903