Ictodosauria
ankylosaur
Triassic period
dino
family Hadrosauridae
order Ictodosauria
Triassic
Hadrosauridae
genus Anatotitan
titanosauriform
neosauropod
cerapodan
Ornithischia
caseasaur
genus Brontosaurus
neornithischian
genus Apatosaurus
order Ornithischia
trachodon
trachodont
ankylosaurid
macronarian
neotetanuran
bone-headed dinosaur
stegosaurid
Dinosaurian
vulcanodontid
Sauroctonos
corytophanine
megaraptoran
tyrannoraptoran
dinosauroid
subarctometatarsus
nontitanosauriform
tetanuran
melanorosaurid
ankylosauromorph
anurognathid
thescelosaur
Marginocephalia
massopodan
order Pterosauria
megalosaur
eusaurischian
Pterosauria
marginocephalian
suborder Pachycephalosaurus
suborder Marginocephalia
megalosaurus