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...

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...

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

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

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

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

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...

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

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

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

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...

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

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

subarctometatarsal condition. In 2002 Sinovenator was placed in the Troodontidae. Sinovenator is a basal or "primitive" troodontid, and shares features...

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

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

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

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...

Saurornithoididae, Zanabazar is now thought to be a derived member of Troodontidae. The cladogram below shows the phylogenetic position of Zanabazar among...

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

Chordata Clade: Dinosauria Clade: Saurischia Clade: Theropoda Family: †Troodontidae Genus: †Albertavenator Evans et al., 2017 Type species †Albertavenator...

Troodontidae...

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

Thomas Holtz found a close relationship between the Ornithomimosauria and Troodontidae, and named this group Bullatosauria. Holtz rejected this hypothesis in...

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

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