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...

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

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

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

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...

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...

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

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

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

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

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

bears a retractable 'sickle claw'. Sinusonasus was in 2004 placed in the Troodontidae. It was presumed to have had a rather derived position, despite living...

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

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

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

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...

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

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

the Prismatoolithidae type. Such eggs have earlier been referred to Troodontidae. 2017 in archosaur paleontology Pei, R.; Norell, M.A.; Barta, D.E.; Bever...

life, possibly in an attack on prey. In 2011 Talos was assigned to the Troodontidae. A cladistic analysis indicated it formed a clade of derived troodontids...

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

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

It has been suggested that this article be merged into Troodontidae. (Discuss) Proposed since April 2024....

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

share similar wear patterns to those seen in the tyrannosauridae and troodontidae, respectively. However, micro-wear on the teeth indicated that Dromaeosaurus...

to birds than to oviraptorosaurs. These include Dromaeosauridae and Troodontidae (historically grouped under Deinonychosauria) and Avialae (including...