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Fig. 9 | Frontiers in Zoology

Fig. 9

From: Development of the squamate naso-palatal complex: detailed 3D analysis of the vomeronasal organ and nasal cavity in the brown anole Anolis sagrei (Squamata: Iguania)

Fig. 9

The naso-palatal complex of the brown anole at stages 11 and 12 based on the 3D reconstructions (AB and FH) and transverse histological sections at levels shown in Figs. G and H (CE). A Anterodorsal view of the semi-transparent snout; stage 12. B Anterodorsolateral view of the semi-transparent snout; stage 12. C Section at the level of the connection of the vestibulum with the main nasal cavity; stage 12. D Section at the level of the lateral nasal concha; stage 12. E Section through the choanal groove; stage 11. F Lateral view of the nasal cavity (shown without the lateral nasal gland); stage 12. F′ Lateral view of the nasal cavity rendered with partial opacity; stage 12. G Dorsal view of the nasal cavity; stage 12. H Ventrolateral views of the palate; stage 12. Abbreviations: a anterior, asp anterior segment of the palate, chf choanal fold, chg choanal groove, dng main duct of the lateral nasal gland, dv duct of the VNO, e eye, ecs extraconchal space, en external naris, ict inner choanal tube, L1L3 layers of the sensory olfactory epithelium, lcc lacrimal canaliculi, ld lacrimal duct, lnc lateral nasal concha, lng lateral nasal gland, mxf maxillary fold, np nasal plug, och outer choana, oct outer choanal tube, oe sensory olfactory epithelium, scf subconchal fold, Stt Stammteil, tg tongue, vc vomerine cushion, ves vestibulum, vf vomeronasal fenestra, vvc vestibular ventral channel. Green star narrowed part of the outer choanal tube, white stars derivatives of the choanal diverticulum, green asterisk anterior extension of the lateral nasal concha, white arrow antorbital space, red arrow formation of the ectochoanal cartilage. Note: italicized labels on 3D images indicate the concavities in rendered structures. Scale bars 250 μm (A, B) and 50 μm (C–E)

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