Talk:Reptilian Physiology/@comment-31722205-20160802220920/@comment-32744161-20180324212433

Feathers have nothing to do with being a reptile, it is about the traits:
 * Dorsal origin of temporal musculature
 * Loss of caniniform region in maxillary tooth row
 * External nares close to the midline
 * Postparietal absent
 * Squamosal mainly restricted to top of skull
 * The occipital flange of the squamosal is little exposed on the occiput
 * Anterior process of squamosal narrow
 * Quadrate exposed laterally
 * Unossified dorsal process of stapes
 * Stapes slender
 * Trunk ribs mostly single headed
 * Cleithrum absent
 * Modified ilium
 * Ontogenetic fusion of caudal ribs
 * Sacral ribs oriented laterally
 * Tubular bone lost
 * Entepicondylar foramen absent
 * Radius as long as ulna
 * Small proximal carpals and tarsal
 * Fifth distal tarsal absent
 * Short and stout fifth or hooked metatarsal
 * Perforating foramen of manus lost