Classification of the genus Trochactaeon
G. †Trochactaeon Meek 1863
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Subg. †Trochactaeon (Mexicotrochactaeon) Hacobjan 1972
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†Trochactaeon (Mexicotrochactaeon) coniformis Böse 1906
†Trochactaeon (Mexicotrochactaeon) granthamensis Sohl and Kollmann 1985
†Trochactaeon (Mexicotrochactaeon) melonensis Sohl and Kollmann 1985
†Trochactaeon (Mexicotrochactaeon) palmeri Sohl and Kollmann 1985
†Trochactaeon (Mexicotrochactaeon) rossi Sohl and Kollmann 1985
†Trochactaeon (Mexicotrochactaeon) teaensis Sohl and Kollmann 1985
†Trochactaeon (Mexicotrochactaeon) wrighti Sohl and Kollmann 1985
Subg. †Trochactaeon (Neocylindrites) Sayn 1932
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†Trochactaeon (Neocylindrites) cumminsi Stanton 1947
†Trochactaeon (Neocylindrites) nelsoni Sohl and Kollmann 1985
†Trochactaeon (Neocylindrites) punctatus Maldonado-Koerdell 1950
Subg. †Trochactaeon (Trochactaeon) Meek 1863
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†Trochactaeon (Trochactaeon) frazierensis Anderson 1958
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Invalid names: Acteonella rustica Anderson 1958 [synonym]
†Trochactaeon (Trochactaeon) packardi Anderson 1958
†Trochactaeon (Trochactaeon) woodsi Rennie 1930
†Trochactaeon matensis Fittipaldi 1900
†Trochactaeon sergipensis Maury 1936