Classification of the genus Chriacus
G. †Chriacus Cope 1883
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†Chriacus badgleyi Gingerich 1989
†Chriacus baldwini Cope 1882
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Invalid names: Chriacus schlosserianus Cope 1888 [synonym], Metachriacus provocator Simpson 1935 [synonym], Oxyclaenus pearcei Gazin 1941 [synonym], Spanoxyodon latrunculus Simpson 1935 [synonym], Tricentes crassicollidens Cope 1884 [synonym]
†Chriacus calenancus Van Valen 1978
†Chriacus gallinae Matthew and Granger 1915
†Chriacus katrinae Van Valen 1978
†Chriacus metocometi Van Valen 1978
†Chriacus oconostotae Van Valen 1978
†Chriacus truncatus Cope 1884
Invalid names: Metachriacus Simpson 1935 [synonym], Spanoxyodon Simpson 1935 [synonym], Tricentes Cope 1884 [synonym]