Apalone spinifera atra (Webb & Legler 1960:21)

Holotype: KU 46903 (Duellman & Berg 1962:195; photographed in the original description (p. 29, Pl. 1) and reproduced in Smith & Smith 1980:960); paratypes (9), KU 46904-06 and 46908-12 (Duellman & Berg 1962:196); and UIMNH 43510 (Smith et al. 1964:36). KU 46911 photographed in the original description (p. 30, Pl. 2) and reproduced in Smith & Smith (1980:960).