hylaeosaurus
genus Titanosaurus
Titanosaurus
genus Protoceratops
albertosaur
genus Ceratosaurus
Seismosaurus
thescelosaur
genus Seismosaurus
dinocephalian
paleovertebrate
suborder Ceratopsia
Tyrannosaurus rex
herrerasaurid
therizinosaurian
ankylosauromorph
ankylopollexian
Ceratopsia
therizinosaur
styracosaur
suborder Pachycephalosaurus
stegosaurian
styracosaurus
seismosaur
megaraptoran
family Lacertidae
genus Anatotitan
family Ceratopsidae
ground-shaker
nodosaurian
genus Psittacosaurus
Ceratopsidae
rhynchosaur
Pendraig
Lacertidae
bone-headed dinosaur
neotheropodan
coelurosaurian
titanosauriform
hadrosauriform
coelophysis
camarasaur
dryomorph
diplodocoid
dryomorphan
abelisauroid
neotetanuran
suborder Ceratosaura
dinosaur
eusaurischian