Definition of Synapsid. Meaning of Synapsid. Synonyms of Synapsid

- (which includes all extant reptiles and birds). Unlike other amniotes, synapsids have a single temporal fenestra, an opening low in the skull roof behind...
- PEL-ih-kə-sor) is an older term for basal or primitive Late Paleozoic synapsids, excluding the therapsids and their descendants. Previously, the term...
- These lists of synapsids collectively include every genus that has ever been included in the clade Synapsida- the mammals and their evolutionary precursors...
- representatives. Although early synapsids have historically been referred to as "mammal-like reptiles", all synapsids are more closely related to mammals...
- Sphenacodontia is a stem-based clade of derived synapsids. It was defined by Amson and Laurin (2011) as "the largest clade that includes Haptodus baylei...
- /daɪˈmɛtrəˌdɒn/; lit. 'two measures of teeth') is an extinct genus of sphenacodontid synapsid tetrapods that lived during the Cisuralian age of the Early Permian period...
- of their synapsid ancestors in the Pennsylvanian sub-period of the late Carboniferous period. By the mid-Tri****ic, there were many synapsid species that...
- Therapsida is a clade comprising a major group of eupelycosaurian synapsids that includes mammals and their ancestors and close relatives. Many of the...
- paraphyletic groups, includes birds while excluding mammals and their synapsid ancestors. So defined, Reptilia is identical to Sauropsida. Though few...
- These extended margins of thinned bone are called supratemporal fossae. Synapsids, including mammals, have one temporal fenestra, which is ventrally bordered...