After Sansom & Smith, 2005

Chirognathus Branson & Mehl, 1933a

        †Chirognathus duodactylus Branson & Mehl, 1933a
            †Chirognathus tenuidentatus Stauffer?; Amsden & Miller, 1942
            †Chirogathus unguliformis Stauffer?; Amsden & Miller, 1942
            †Chirognathus alternata Branson & Mehl; Amsden & Miller, 1942
            †Chirognathus delicatus Branson & Mehl; Amsden & Miller, 1942
            †Chirognathus multidens Branson & Mehl; Amsden & Miller, 1942
            †Chirognathus sp.; Amsden & Miller, 1942
            †Chirognathus curvidens Branson & Mehl; Amsden & Miller, 1942
            †Chirognathus monodactyla Branson & Mehl; Amsden & Miller, 1942
            †Cyrtoniodus erectus Stauffer; Amsden & Miller, 1942
            †Cyrtoniodus complicatus Stauffer; Amsden & Miller, 1942
            †Chirognathus duodactylus Branson & Mehl; Sweet, 1982
            †Chirognathus duodactylus Branson & Mehl; Sansom & Smith, 2005

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