Classification of Kennedy and Cobban 1988

Or. †Ammonoidea Zittel 1884 [ammonite]
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Fm. †Baculitidae Gill 1871
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G. †Baculites Lamarck 1799
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†Baculites yokoyamai Tokunga and Shimizu 1926
G. †Coilopoceras Hyatt 1903
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†Coilopoceras springeri Hyatt 1903
G. †Hoplitoides von Koenen 1898
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†Hoplitoides gibbosulus von Koenen 1897
†Hoplitoides ingens von Koenen 1897
G. †Kamerunoceras Reyment 1954
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†Kamerunoceras isovokyense Collignon 1965
G. †Neoptychites Kossmat 1895
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†Neoptychites cephalotus Courtiller 1860
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Invalid names: Neoptychites xetriformis Pervinquiére 1907 [synonym]
Fm. †Collignoniceratidae Wright and Wright 1951
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G. †Collignoniceras Breistroffer 1947
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†Collignoniceras woollgari Mantell 1822
G. †Prionocyclus Meek 1876
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†Prionocyclus hyatti Stanton 1894
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Invalid names: Prionotropis eaglense Adkins 1928 [synonym]
Fm. †Acanthoceratidae Grossouvre 1894
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G. †Morrowites Cobban and Hook 1983
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†Morrowites depressus Powell 1963
G. †Romaniceras Spath 1923
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Subg. †Romaniceras (Romaniceras) Spath 1923
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Invalid names: Romaniceras (Romaniceras) indiduraense Jones 1938 [synonym], Romaniceras adkinsi Jones 1938 [synonym], Romaniceras santaanaense Jones 1938 [synonym], Romaniceras toribioense Jones 1938 [synonym]
G. †Spathites Kummel and Decker 1954
Subg. †Spathites (Spathites) Kummel and Decker 1954
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†Spathites (Spathites) puercoensis Herrick and Johnson 1900
Subg. †Puzosia (Puzosia) Bayle 1878
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†Puzosia (Puzosia) serratocarinata Kennedy and Cobban 1988
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Invalid names: Pseudotissotia kellyi Jones 1938 [synonym], Spathites chispaensis Kummel and Decker 1954 [synonym]