Fig. 1

General anatomy of the cartilaginous nose. a Scheme adopted from Maier [56] on the rostral nasal cartilage in an adult Neomys fodiens. Cartilage in blue, bones (only on right body side) in orange, soft tissue in gray. Cross-sections of a pouch young Caluromys philander; dpn (postnatal days) 30, HL (head length) 13 mm at the ethmoidal region with details of the cupula nasi anterior, b anterior wall of cartilago cupularis, c cartilago cupularis in the region of fenestra narina, d region posterior to the fenestra narina, e anterior margin of the zona annularis. Numbers of histological serial sections are indicated at the bottom right of each figure. Numbers ascend in caudal direction. Scale bars equal 1 mm. Abbreviations: ai – area internarica, ane – apertura nasi externa, at – atrioturbinale, cc – cartilago cupularis, cdn – cartilago ductus nasopalatini, cna – cupula nasi anterior, cpa – cartilago paraseptalis anterior, dnl – ductus nasolacrimalis, dnp – ductus nasopaltinus, fpt – foramen praetransversale, lat. lam – lateral lamina, lta – lamina transversalis anterior, mat – marginoturbinale, med. lam – medial lamina, pas – processus alaris superior, pc – processus cupularis, plv – processus lateralis ventralis, pmx – praemaxillare, pn – paries nasi, ppl – processus paralacrimalis, sn – septum nasi, ss – sulcus supraseptalis, sv – sulcus ventralis, tea – tectum nasi anterius, tei – tectum nasi intermedium, tep – tectum nasi profundum, tn – tectum nasi, vno – organon vomeronasale, vo – vomer, za – zona annularis