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Troodontidae /troʊ.əˈdɒntɪdiː/ is a
clade of bird-like
theropod dinosaurs from the Late Jur****ic to Late Cretaceous.
During most of the 20th century, troodontid...
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Ornithomimus velox. It
contains the
major subgroups Avialae, Dromaeosauridae,
Troodontidae, Oviraptorosauria, and Therizinosauria.
Ornitholestes and the Alvarezsauroidea...
- years,
during which time the
family Pachycephalosauridae was
known as
Troodontidae. In 1945,
Charles Mortram Sternberg rejected the
possibility that Troodon...
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grams (21–25 oz) in m****. In Eumaniraptora, both
Dromaeosauridae and
Troodontidae went
later through four
independent events of gigantism,
three times...
- bar. The
following cladogram shows the
position of
Byronosaurus within Troodontidae according to a 2017
analysis by the
palaeontologist Caizhi Shen and colleagues:...
- domesticus). It
traditionally includes the
families Dromaeosauridae and
Troodontidae,
which each
possess enlarged "sickle claws". However,
troodontids may...
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Chordata Clade:
Dinosauria Clade:
Saurischia Clade:
Theropoda Family: †
Troodontidae Subfamily: †Troodontinae Genus: †Hypnovenator Kubota,
Kobayashi & Ikeda...
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Urbacodon resembles Byronosaurus and Mei but
differs from most
other Troodontidae in that its
teeth lack serrations.
Urbacodon is
distinguished from Byronosaurus...
- that
Xiaotingia formed a
clade with Archaeopteryx,
Dromaeosauridae and
Troodontidae to the
exclusion of
other groups traditionally seen as birds. Xu et al...
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scientists classifying them as a
distinct family, a
basal subfamily of
Troodontidae,
members of Archaeopterygidae, or an ****emblage of
dinosaurs that are...
