Figure 2. A. Siwalik Group Python precloacal vertebra (H-GSP 13961) in anterior (1), dorsal (2), ventral (3), right lateral (4), and posterior (5) views. B. Siwalik Group Python posterior precloacal vertebra (H-GSP 53297) in anterior (1), and ventral (2) views. Scale equals 10 mm. Anatomical abbreviations: HMKL, haemal keel; IZPR, Interzygapophyseal ridge; PMNH, posterior median notch; PZAP, prezygapophyseal accessory process; SCPF, subcentral paralymphatic fossae; ZYGA, zygantrum; ZYGS, zygosphene.