Classification of the subfamily Synthetoceratinae

Subfm. †Synthetoceratinae Frick 1937
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Tr. †Kyptoceratini Webb 1981
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G. †Kyptoceras Webb 1981
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†Kyptoceras amatorum Webb 1981
G. †Syndyoceras Barbour 1905
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†Syndyoceras cooki Barbour 1905
G. †Synthetoceras Stirton 1932
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†Synthetoceras davisorum Hulbert and Whitmore 2006
†Synthetoceras tricornatus Stirton 1932
Tr. †Synthetoceratini Webb 1981
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G. †Lambdoceras Stirton 1967
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†Lambdoceras hessei Stirton 1967
†Lambdoceras siouxensis Frick 1937
†Lambdoceras trinitiensis Patton and Taylor 1971
G. †Prosynthetoceras Frick 1937
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Invalid names: Dromomeryx angustidens Hay 1924 [synonym], Merycodus grandis Hay 1924 [synonym], Syndyoceras australis White 1941 [synonym], Synthetoceras (Prosynthetoceras) douglasi White 1947 [synonym], Synthetoceras rileyi Frick 1937 [synonym]