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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...
- 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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Ornithomimus velox. It
contains the
major subgroups Avialae, Dromaeosauridae,
Troodontidae, Oviraptorosauria, and Therizinosauria.
Ornitholestes and the Alvarezsauroidea...
- bar. The
following cladogram shows the
position of
Byronosaurus within Troodontidae according to a 2017
analysis by the
palaeontologist Caizhi Shen and colleagues:...
-
grams (21–25 oz) in m****. In Eumaniraptora, both
Dromaeosauridae and
Troodontidae went
later through four
independent events of gigantism,
three times...
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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...
- domesticus). It
traditionally includes the
families Dromaeosauridae and
Troodontidae,
which each
possess enlarged "sickle claws". However,
troodontids may...
-
centimetres (1.2 in). Lü and
colleagues ****igned
Xixiasaurus to the
family Troodontidae based on its high tooth-count,
constriction between the
crowns and roots...
- 6 ft) long and
weighing 9
kilograms (20 lb). It
belongs to the
family Troodontidae, a
group of small, bird-like,
gracile maniraptorans. All troodontids...
- Zhang;
Songhai Jia &
Qiang Ji (2010). "A new
troodontid (Theropoda:
Troodontidae) from the Late
Cretaceous of
central China, and the
radiation of Asian...
