Classification of Kennedy and Cobban 1993

Fm. †Baculitidae Gill 1871
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G. †Baculites Lamarck 1799
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†Baculites haresi Reeside 1927
Superfm. †Acanthocerataceae de Grossouvre 1894
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Fm. †Collignoniceratidae Wright and Wright 1951
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Subfm. †Texanitinae Collignon 1948
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G. †Cryptotexanites Kennedy and Cobban 1993
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†Cryptotexanites paedomorphicus Kennedy and Cobban 1993
G. †Menabites Collignon 1948
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Subg. †Menabites (Bererella) Collignon 1948
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G. †Submortoniceras Spath 1926
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†Submortoniceras punctatum Collignon 1948
†Submortoniceras uddeni Young 1963
†Submortoniceras woodsi Spath 1921
G. †Texanites Spath 1932
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Subg. †Texanites (Texanites) Spath 1932
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Superfm. †Desmocerataceae Zittel 1895
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Fm. †Muniericeratidae Wright 1952
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G. †Pseudoschloenbachia Spath 1921
Fm. †Pachydiscidae Spath 1922
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G. †Pachydiscus Zittel 1884
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Subg. †Pachydiscus (Pachydiscus) Zittel 1884
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Subfm. †Diplomoceratinae Spath 1926
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G. †Chesapeakella Kennedy and Cobban 1993
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†Chesapeakella nodatum Kennedy and Cobban 1993
G. †Glyptoxoceras Spath 1925
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†Glyptoxoceras rugatus Forbes 1846
Subfm. †Scaphitinae Gill 1871
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G. †Scaphites Parkinson 1811
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Subg. †Scaphites (Scaphites) Parkinson 1811
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Superfm. †Hoplitaceae Douvillé 1890
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Fm. †Placenticeratidae Hyatt 1900
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G. †Placenticeras Meek 1876
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†Placenticeras placenta DeKay 1828
†Placenticeras syrtale Morton 1834
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Invalid names: Stantonoceras pseudocostatum Johnson et al. 1964 [synonym]
Subg. †Menabites (Menabites) Collignon 1948
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Subg. †Menabites (Delawarella) Collignon 1948
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