Recognition
The ellipsoidal carapace (to 27 cm), similar to that of M. gibbus but with a low medial groove, is somewhat serrated with a shallow subcaudal notch, and usually broadest at the 8th marginals and highest on the 3rd vertebral. Some rough striations may occur on the scutes. Vertebrals are broader than long. The carapace is brown to gray or black. The plastron covers much of the carapacial opening, is slightly upturned anteriorly, and is posteriorly notched. The intergular scute completely separates the gulars, but not the humerals, and is slightly shorter than, or about the same length as, its distance from the abdominals. The plastral formula is variable, but the femoral, abdominal and intergular scutes are usually longest. The plastron is yellow with a brown to black pattern which usually extends between the pectorals and femorals. Head and neck are considerably shorter than the carapace. The snout slightly protrudes and the upper jaw is neither notched nor serrated. Head and neck are gray, throat and chin yellow, and the yellowish upper jaws are seldom marked with dark pigment. Some orange vermiculations may occur on the head, and the lower jaw may be red. Other skin is gray to olive, and there is a fringe of large scales on the outer border of the forelimbs. Males have slightly longer, thicker tails with the vent nearer the tip, and a deep plastral notch. Females have a shallow plastral notch.
Read more about this topic: Vanderhaege's Toad-headed Turtle
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