Editing Dimetrodon (section)

==== Nasal cavity ====
On the inner surface of the nasal section of the skull are ridges called [[Nasoturbinal concha|nasoturbinals]], which may have supported cartilage that increased the area of the [[olfactory epithelium]], the layer of tissue that detects odors. These ridges are much smaller than those of later synapsids from the Late Permian and Triassic, whose large nasoturbinals are taken as evidence for warm-bloodedness because they may have supported mucous membranes that warmed and moistened incoming air. Thus, the nasal cavity of ''Dimetrodon'' is [[Transitional fossil|transitional]] between those of early land [[vertebrate]]s and mammals.<ref name=KTS06>{{cite journal |last=Kemp |first=T.S. |s2cid=3184629 |year=2006 |title=The origin and early radiation of the therapsid mammal-like reptiles: a palaeobiological hypothesis |journal=Journal of Evolutionary Biology |volume=19 |issue=4 |pages=1231–1247 |doi=10.1111/j.1420-9101.2005.01076.x |pmid=16780524|doi-access=free }}</ref>