Generalised schematic mammalian nasal capsule. A Coronal section through the rostral part of the nasal capsule; B coronal section through the caudal part of the nasal capsule, modified from Maier (1993b); C medial view of parasagittal section modified from Maier (1993a) and Maier and Ruf (2014). These images show the nasal structure without facial exocranial (dermal) bones, except for the maxilla and palatine bones. Broken lines indicate each coronal section. Abbreviations: at = atrioturbinal; ept = epiturbinal; et I (pa) = ethmoturbinal I pars anterior; et I (pp) = ethmoturbinal I pars posterior; et II–IV = ethmoturbinals II–IV; etr = ethmoturbinal recess; ft = frontoturbinal; it = interturbinal; lh = lamina horizontalis; lsc = lamina semicircularis; mt = marginoturbinal; mx = maxilla; mxt = maxilloturbinal; nph = nasopharyngeal duct; nt = nasoturbinal; pal = palatine.