suborder Theropoda
ankylosaurine
massopodan
Uintatheriidae
deinonychosaurian
family Uintatheriidae
Pelycosauria
order Ictodosauria
subarctometatarsus
Pendraig
genus Coelophysis
order Pelycosauria
albertosaurine
genus Psittacosaurus
Ictodosauria
ichthyoarchaeological
Marginocephalia
marginocephalian
stenopterygius
suborder Marginocephalia
scansoriopterygid
genus Ceratosaurus
neosauropod
Stenopterygius quadrisicissus
baracromian
genus Protoceratops
neoceratopsian
scansoriopterigid
genus Styracosaurus
genus Ankylosaurus
nothosaurian
tyrannosaurid
dinosauric
theropod
seismosaurus
suborder Pachycephalosaurus
camarasaur
hadrosauriform
dryomorph
allosaurus
macronarian
allosaur
dryomorphan
arthropterygium
megaraptorid
aigialosaurid
arachnomorph
anaptomorphine