Troodontidae /troʊ.əˈdɒntɪdiː/ is a clade of bird-like theropod dinosaurs from the Late Jurassic 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...

scientists classifying them as a distinct family, a basal subfamily of Troodontidae, members of Archaeopterygidae, or an assemblage of dinosaurs that are...

grams (21–25 oz) in mass. In Eumaniraptora, both Dromaeosauridae and Troodontidae went later through four independent events of gigantism, three times...

Ornithomimus velox. It contains the major subgroups Avialae, Dromaeosauridae, Troodontidae, Oviraptorosauria, and Therizinosauria. Ornitholestes and the Alvarezsauroidea...

domesticus). It traditionally includes the families Dromaeosauridae and Troodontidae, which each possess enlarged "sickle claws". However, troodontids may...

of the Deinonychosauria outside of Dromaeosauridae, Unenlagiinae and Troodontidae. In 2024, the describers of the unenlagiine Diuqin considered Imperobator...

Zhang; Songhai Jia & Qiang Ji (2010). "A new troodontid (Theropoda: Troodontidae) from the Late Cretaceous of central China, and the radiation of Asian...

Troodon formosus. Currie also made Saurornithoididae a junior synonym of Troodontidae. In 1988, Gregory S. Paul went farther and included Saurornithoides mongoliensis...

that Xiaotingia formed a clade with Archaeopteryx, Dromaeosauridae and Troodontidae to the exclusion of other groups traditionally seen as birds. Xu et al...

Urbacodon resembles Byronosaurus and Mei but differs from most other Troodontidae in that its teeth lack serrations. Urbacodon is distinguished from Byronosaurus...

Alvarezsauridae †Family Therizinosauridae †Infradivision Deinonychosauria †Family Troodontidae †Family Dromaeosauridae Class Aves †Suborder Sauropodomorpha †Thecodontosaurus...

to the resemblance with this group that is today seen as part of the Troodontidae, and combines their name with a Greek lestes, "thief". The specific name...

family Saurornithoididae. Since these families were the same but the Troodontidae named first, it carries scientific legitimacy. Many milestones of troodontid...

Chordata Clade: Dinosauria Clade: Saurischia Clade: Theropoda Family: †Troodontidae Subfamily: †Troodontinae Genus: †Hypnovenator Kubota, Kobayashi & Ikeda...

Leptoceratopsidae, Ceratopsidae, Tyrannosauridae, Dromaeosauridae, Troodontidae, and Avialae. This evidence suggests that both Nanuqsaurus and its likely...

Chordata Clade: Dinosauria Clade: Saurischia Clade: Theropoda Family: †Troodontidae Subfamily: †Troodontinae Genus: †Latenivenatrix Type species †Latenivenatrix...

Philip John Currie showed that this concept was a junior synonym of Troodontidae, implying that Saurornithoides were a troodontid too. The cladogram below...

†Jinfengopteryx †Aurornis †Dromaeosauridae †Troodontidae Avialae...

group) †Archaeopterygidae (small, winged theropods or primitive birds) †Troodontidae (omnivores; enlarged brain cavities) †Dromaeosauridae ("raptors") †Microraptoria...

bar. The following cladogram shows the position of Byronosaurus within Troodontidae according to a 2017 analysis by the palaeontologist Caizhi Shen and colleagues:...

Chordata Clade: Dinosauria Clade: Saurischia Clade: Theropoda Family: †Troodontidae Genus: †Harenadraco Lee et al., 2024 Species: †H. prima Binomial name...

Yixianosaurus †Archaeopterygidae Alcmonavis? Archaeopteryx Wellnhoferia Anchiornithidae? †Dromaeosauridae see Dromaeosauridae †Troodontidae see Troodontidae...

"hunter", suggesting it loved hunting. The phylogenetic relationships of Troodontidae were explored by Tsuihiji et al. (2014) using the data matrix published...

Yixianosaurus †Archaeopterygidae Alcmonavis? Archaeopteryx Wellnhoferia Anchiornithidae? †Dromaeosauridae see Dromaeosauridae †Troodontidae see Troodontidae...

the "falchiporan condition". Borogovia was assigned by Osmólska to the Troodontidae in 1987. Dinosaurs portal Timeline of troodontid research Osmólska, H...

Pectinodon. While Pectinodon is only known from teeth, its larger family Troodontidae is known from much more complete specimens. They were small, bird-like...

Rui; Zhang, Qiyue; Tan, Lin (2024-07-17). "A new Urbacodon (Theropoda, Troodontidae) from the Upper Cretaceous Iren Dabasu Formation, China: Implications...

Anchiornithidae in various phylogenetic positions, including close to Troodontidae or Archaeopterygidae. The results of the phylogenetic analyses by Xu...

likely than this hypothesis, and as likely as Archaeopterygidae and Troodontidae being sister clades. As in the wings of modern birds, the flight feathers...