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