Chamaeleonidae

Villa, Andrea & Delfino, Massimo, 2019, A comparative atlas of the skull osteology of European lizards (Reptilia: Squamata), Zoological Journal of the Linnean Society 187 (3), pp. 828-928 : 845

Chamaeleonidae ( Fig. 8D )

Chamaeleo chamaeleon has a very small and slender premaxilla, with a very slender, long and pointed ascending nasal process. The alveolar plate has concave lateral margins in anterior view and is larger at its dorsal end. Palatal processes are not developed and there is no incisive process. Teeth are very small, acrodont, triangular and monocuspid. The number of tooth positions is either two or three. Maximum width of the alveolar plate varies from 0.5 mm to 1 mm.

Figures

Figure 8. Premaxillae – A–C,Laudakia stellio (HUJ.OST-Z-424), premaxilla in anterior (A), left lateral (B), and posterior (C) views. D, Chamaeleo chamaeleon (NHMW 721), articulated premaxilla in anterior view. E–H, Ac.erythrurus (UAM.R.ACVII), premaxilla in anterior (E), posterior (F), left lateral (G) and ventral (H) views. I–L, I. monticola monticola (UAM.R.Lm77), premaxilla in anterior (I), posterior (J), right lateral (K) and dorsal (L) views. M–P, Lacerta bilineata (MDHC 15), premaxilla in anterior (M), posterior (N), left lateral (O) and dorsal (P) views. Q–T, Po. waglerianus (MDHC 390), premaxilla in anterior (Q), posterior (R), right lateral (S) and dorsal (T) views. U, Z. vivipara (UAM.R.Lv24), premaxilla in posterior view. V–Y, Chalcides chalcides (MDHC 94), left premaxilla in anterior (V), posterior (W), lateral (X) and dorsal (Y) views.Abbreviations: am, alveolar margin; anp, ascending nasal process; ap, alveolar plate; flc, foramen of the longitudinal canal; ip, incisive process; pp, palatal process; sc, septonasal crest. Scale bars = 1 mm.