coelophysis
suborder Marginocephalia
titanosauriform
Marginocephalia
neotetanuran
marginocephalian
centrosaurine
vulcanodontid
dino
ceratosaurian
genus Ankylosaurus
megaraptorid
dinosauromorph
ornithomimosaurian
trachodont
allosaur
allosaurus
megalosaurus
thescelosaur
megalosaur
chasmosaurine
caenagnathid
tyrannosaurid
titanosaurian
Uintatheriidae
theropod dinosaur
eumaniraptoran
theropod
dinosauriform
family Uintatheriidae
bird-footed dinosaur
neotheropodan
suborder Pachycephalosaurus
tyrannosaurine
genus Brontosaurus
Ictodosauria
hylaeosaurus
titanosauroid
order Ictodosauria
melanorosaurid
saurornitholestine
Ceratopsia
brachiosaur
nontitanosauriform
genus Apatosaurus
suborder Ceratopsia
scansoriopterigid
pachyrostran