Classification of Gilmore 1924
Fm. †Psalisauridae Lambe 1918
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Subor. †Orthopoda Cope 1866
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Fm. †Troodontidae Gilmore 1924
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G. †Troodon Leidy 1856
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†Troodon brevis Lambe 1918
†Troodon formosus Leidy 1856
†Troodon validus Lambe 1902
Invalid names: Stegoceras Lambe 1902 [synonym]