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Floor of the mouth in Dipsadini.Dipsas neivai (IBSP 70310) (A), Sibynomorphus mikanii (IBSP 70224) (B), Sibon nebulatus (MZUSP 6221) (C), and Tropidodipsas sartorii (KU 157638) (D). Abbreviations: lx, larynx; mt, median tubercle; mxt, maxillary tooth; sl, supralabial scale; sp, sublingual plica. Scale bar in pictures A-B = 5 mm and C-D = 2.5 mm.
