genus Struthiomimus
genus Edmontosaurus
suborder Ceratosaura
suborder Sauropoda
Sauropoda
genus Coelophysis
genus Ceratosaurus
Theropoda
suborder Theropoda
saurolophid
suborder Pachycephalosaurus
neosauropod
suborder Marginocephalia
marginocephalian
Marginocephalia
trachodon
order Thecodontia
trachodont
Thecodontia
titanosauriform
Chronoperates paradoxus
turiasaurian
Ceratopsidae
genus Brontosaurus
Cretacean
Prosauropoda
scansoriopterigid
caseasaur
suborder Prosauropoda
Rhynchocephalia
genus Apatosaurus
family Ceratopsidae
nontitanosauriform
order Rhynchocephalia
neotheropod
neornithischian
cetiosaur
hylaeosaurus
sauropodous
macronarian
dinosauric
Gideon Algernon Mantell
paleoconnection
albertosaurus
predentary
sauropodomorphan
Gideon Mantell
sauropod
Mantell
thescelosaur