Dhinosauria inowanzotsanangurwa maererano ne MRCA ye Megalosaurus uye Iguanodon, nekuti izvi zvaive zviviri zvezvizvarwa zvitatu zvakataurwa naRichard Owen paakaziva Dinosauria. Tsananguro mbiri idzi dzinoguma neseti imwechete yemhuka dzinotsanangurwa semadhinosaurs: "Dinosauria = Ornithischia + Saurischia", inosanganisira ankyloproposaurians (anopoped herbivorous quadruped), stegoposaurians (plated herbivorous quadrupeds), ceratopsians (herbivorous quadrupeds ine nyanga uye neornithithithithithithes), uye zvese zvizvarwa zvayo.
tateguru akajairika achangoburwa (MRCA) weTriceratops neNeornithes, nevana vayo vose