genus Psittacosaurus
genus Styracosaurus
Titanosauridae
family Titanosauridae
Prosauropoda
suborder Prosauropoda
nodosaurian
Marginocephalia
genus Protoceratops
genus Triceratops
marginocephalian
suborder Marginocephalia
paleovertebrate
suborder Ceratosaura
Pendraig
Ceratopsia
suborder Ceratopsia
suborder Pachycephalosaurus
psittacosaurus
therizinosaur
Theropoda
suborder Theropoda
ankylosauromorph
therizinosaurian
neornithischian
theropod
dinosauromorph
neotheropod
alamosaur
genus Ceratosaurus
thescelosaur
titanosauriform
family Uintatheriidae
deinonychosaurian
Uintatheriidae
suchomimus
genus Corythosaurus
caseasaur
Seismosaurus
genus Seismosaurus
camarasaur
neotheropodan
bird-footed dinosaur
therizinosauroid
theropod dinosaur
genus Titanosaurus
archosaurian reptile
genus Coelophysis
archosaur
Titanosaurus