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Fossil collection records
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Classification of Webb et al. 2003
Subor.
Tylopoda
Illiger 1811
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Fm. †
Protoceratidae
Marsh 1891 [protoceratid]
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Subfm. †
Protoceratinae
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G. †
Paratoceras
Frick 1937
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†
Paratoceras tedfordi
Webb et al. 2003
G. †
Protoceras
Marsh 1891
G. †
Pseudoprotoceras
Cook 1934
Subfm. †
Synthetoceratinae
Frick 1937
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Tr. †
Kyptoceratini
Webb 1981
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G. †
Kyptoceras
Webb 1981
G. †
Syndyoceras
Barbour 1905
Tr. †
Synthetoceratini
Webb 1981
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G. †
Lambdoceras
Stirton 1967
G. †
Prosynthetoceras
Frick 1937
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†
Prosynthetoceras texanus
Hay 1924
G. †
Synthetoceras
Stirton 1932