In therapsids (advanced synapsids including mammal), the jaw is simplified into an articulation between the dentary and the squamous part of the temporal bone, and hence referred to as a dentary-squamosal jaw.
ɪn θˈɛɹəpsˌɪdz ɐdvˈænst sˈɪnɐpsˌɪdz ɪŋklˈuːdɪŋ mˈæməl, ðə dʒˈɔː ɪz sˈɪmplᵻfˌaɪd ˌɪntʊ ɐn ɑːɹtˌɪkjʊlˈeɪʃən bᵻtwˌiːn ðə dˈɛntɚɹi ænd ðə skwˈɑːməs pˈɑːɹt ʌvðə tˈɛmpɚɹəl bˈoʊn, ænd hˈɛns ɹᵻfˈɜːd tʊ æz ɐ dˈɛntɚɹiskwɑːmˈoʊzəl dʒˈɔː.