Fig. 13

Development of the lacrimal duct at the late developmental phase of the naso-palatal complex in the brown anole based on 3D reconstructions (a–e) and transverse histological sections (f, g): dorsolateral views of the semi-transparent snout at stage 12 (a) and 14 (b); dorsal view of the semi-transparent snout at stage 17 (c) and 18 (d); opening of the lacrimal duct to the choanal groove and the VNO duct at stage 18 (e); section through the choanal groove, just posterior to the VNO duct; stage 19 (f); section through the lacrimal duct at the level of the posterior opening of the choanal groove to the mouth; stage 19 (g). Abbreviations: a anterior, chg choanal groove, dv duct of the VNO, ecc ectochoanal cartilage, ld lacrimal duct, lta lamina transversalis anterior, rpl rostral plate of the lacrimal duct. Red arrow anterior tip of the lacrimal duct, two white arrows posterior expansion of the rostral plate of the lacrimal duct, turquoise arrows range of the opening of the lacrimal duct to the choanal groove and VNO duct. Colours of 3D structures as in Fig. 9. Scale bars 250 μm (a–c and e), 350 μm (d), 50 μm (f, g)