Classification of Cope 1873
G. †Palaeolagus Leidy 1856
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†Palaeolagus triplex Cope 1873
†Palaeolagus turgidus Cope 1873
G. †Gymnoptychus Cope 1873
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†Gymnoptychus chrysodon Cope 1873
†Gymnoptychus minutus Cope 1873
†Gymnoptychus nasutus Cope 1873
†Gymnoptychus trilophus Cope 1873
G. †Tricium Cope 1873
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†Tricium avunculus Cope 1873
†Tricium leporinum Cope 1873
†Tricium paniense Cope 1873