Fig. 3

Cross sections of pouch young Monodelphis domestica where the ductus nasopalatinus opens to the nasal cavity, a CRL (crown-rump length) 11.5 mm, b CRL 63 mm. Transversal sections of the nasal capsule in (c) Petaurus breviceps, CRL 9 mm, and (d) Atelerix albiventris, dpc 25 (days post conception). Numbers of histological serial sections are indicated at the bottom right of each figure. Scale bars equal 500 μm. Continued in Fig. 5. Abbreviations: ai – area internarica, at – atrioturbinale, cc – cartilago cupularis, dnp – ductus nasopalatinus, fia – fenestra internasalis anterior, lat. Lam – lateral lamina, lta – lamina transversalis anterior, med. Lam – medial lamina, mt – maxilloturbinale, sn – septum nasi