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