Fig. 7 in The oldest known Miocene snake fauna from Central Europe: Merkur-North locality, Czech Republic

Fig. 7. Natrix sansaniensis (Lartet, 1851) from the Early Miocene (MN 3a) of Merkur−North. A1–A3. Left compound bone (SGDB Ah−291). B. Right compound bone (SGDB Ah−620). C1–C5. Precaudal vertebra (SGDB Ah−296). In labial (A1, B), lingual (A2), dorsal (A3, C4), lateral (C1), cranial (C2), ventral (C3), and caudal (C5) views. Scale bar 2 mm.