Fig. 2

Early developmental phase of the naso-palatal complex of the brown anole based on 3D reconstructions (A–D’ and H–H’) and transverse histological sections at levels shown in slightly younger embryo in Fig. H’ (E–G): ventral (A), anterior (semi-transparent) (B) and lateral (semi-transparent) view (B’) of developing head at stage 3; ventral (C), anterior (semi-transparent) (D) and lateral (semi-transparent) view (D’) of developing head at stage 5; sections through the nasal pit showing anterior (E) middle (F) and posterior part (G) of this structure at stage 5/6; medial (H) and ventromedial view (H’) of the nasal pit at stage 5. Abbreviations: a anterior, dnc diencephalon, e eye, ecs primordial extraconchal space, lnp lateral nasal prominence, mes mesencephalon, mnp medial nasal prominence, mxp maxillary prominence, pct primitive choanal tube, pn primitive naris, Stt primordial Stammteil¸ tel telencephalon, vp vomeronasal pit. Red star primordium of the vomerine cushion, red asterisk primordial lateral nasal concha; white asterisk olfactory nerve, red arrowhead nasolacrimal groove. Scale bars 200 μm (3D) and 50 μm (histological sections)