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theropod dinosaurs,
birds are only
distantly related to this group.
Ornithischians with well
known anatomical adaptations include the
ceratopsians or "horn-faced"...
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distinguished from
ornithischian dinosaurs by
their three-pronged
pelvic structure, with the
pubis pointed forward. The
ornithischians'
pelvis is arranged...
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Neornithischia ("new
ornithischians") is a
clade of the
dinosaur order Ornithischia. It is the
sister group of the
Thyreophora within the
clade Genasauria...
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small ornithischian Agilisaurus was
inferred to be diurnal.
Based on
fossil evidence from
dinosaurs such as Oryctodromeus, some
ornithischian species...
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Heterodontosauridae is a
family of
ornithischian dinosaurs that were
likely among the most
basal (primitive)
members of the group.
Their phylogenetic...
- ****-AN-ə-SOR-əs) is an
extinct genus of
early dinosauriform,
likely an
ornithischian or silesaurid, from the Late Tri****ic of Argentina. It was a small,...
- theropod, with a
minority of
academics suggesting that it may be an
ornithischian. The type and only
known species so far is
Chilesaurus diegosuarezi...
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Lesothosaurus is a
monospecific genus of
ornithischian dinosaur that
lived during the
Early Jur****ic in what is now
South Africa and Lesotho. It was named...
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Ornithopoda (/ˌɔːrnəˈθɒpədə/) is a
clade of
ornithischian dinosaurs,
called ornithopods (/ˈɔːrnəθəˌpɒdz, ɔːrˈnɪθ-/). They
represent one of the most successful...
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proposed in 1997 the
first informal definition of the group, as all
ornithischians closer to
Ankylosaurus than Stegosaurus. This
definition was further...
