coelophysis
abelisauroid
Marginocephalia
marginocephalian
allosaurus
neotetanuran
suborder Pachycephalosaurus
suborder Marginocephalia
dryomorphan
dinosaurlike
scansoriopterygid
Tyrannosaurus rex
order Pelycosauria
tyrannosaurine
melanorosaurid
genus Anatotitan
neoceratopsian
Pelycosauria
dinomaniac
trachodont
therizinosauroid
Uintatheriidae
albertosaur
family Uintatheriidae
euornithopod
camarasaur
tyrannosauroid
hylaeosaurus
gravisaurian
camptosaurid
neotheropodan
genus Triceratops
dinosaur
ornithomimosaurian
pterodactyl
torosaur
cerapodan
therizinosaurid
suborder Sauropoda
Sauropoda
deinonychosaurian
macronarian
apatosaur
carcharodontosaurine
ankylosauromorph
leptoceratopsid
apatosaurus
Apatosaurus excelsus
nothosaurian