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...
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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...
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grams (21–25 oz) in mass. In Eumaniraptora, both Dromaeosauridae and Troodontidae went later through four independent events of gigantism, three times...
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scientists classifying them as a distinct family, a basal subfamily of Troodontidae, members of Archaeopterygidae, or an assemblage of dinosaurs that are...
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Troodon formosus. Currie also made Saurornithoididae a junior synonym of Troodontidae. In 1988, Gregory S. Paul went farther and included Saurornithoides mongoliensis...
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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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domesticus). It traditionally includes the families Dromaeosauridae and Troodontidae, which each possess enlarged "sickle claws". However, troodontids may...
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Pectinodon. While Pectinodon is only known from teeth, its larger family Troodontidae is known from much more complete specimens. They were small, bird-like...
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Zhang; Songhai Jia & Qiang Ji (2010). "A new troodontid (Theropoda: Troodontidae) from the Late Cretaceous of central China, and the radiation of Asian...
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Alvarezsauridae †Family Therizinosauridae †Infradivision Deinonychosauria †Family Troodontidae †Family Dromaeosauridae Class Aves †Suborder Sauropodomorpha †Thecodontosaurus...
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Chordata Clade: Dinosauria Clade: Saurischia Clade: Theropoda Family: †Troodontidae Subfamily: †Troodontinae Genus: †Latenivenatrix Type species †Latenivenatrix...
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†Jinfengopteryx †Aurornis †Dromaeosauridae †Troodontidae Avialae...
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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...
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Philip John Currie showed that this concept was a junior synonym of Troodontidae, implying that Saurornithoides were a troodontid too. The cladogram below...
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subarctometatarsal condition. In 2002 Sinovenator was placed in the Troodontidae. Sinovenator is a basal or "primitive" troodontid, and shares features...
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group) †Archaeopterygidae (small, winged theropods or primitive birds) †Troodontidae (omnivores; enlarged brain cavities) †Dromaeosauridae ("raptors") †Microraptoria...
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bar. The following cladogram shows the position of Byronosaurus within Troodontidae according to a 2017 analysis by the palaeontologist Caizhi Shen and colleagues:...
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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...
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family Saurornithoididae. Since these families were the same but the Troodontidae named first, it carries scientific legitimacy. Many milestones of troodontid...
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Anchiornithidae in various phylogenetic positions, including close to Troodontidae or Archaeopterygidae. The results of the phylogenetic analyses by Xu...
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member of the Deinonychosauria outside Dromaeosauridae, Unenlagiinae and Troodontidae. In 2024, the describers of the unenlagiine Diuqin considered Imperobator...
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the Prismatoolithidae type. Such eggs have earlier been referred to Troodontidae. 2017 in archosaur paleontology Pei, R.; Norell, M.A.; Barta, D.E.; Bever...
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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...
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Yixianosaurus †Archaeopterygidae Alcmonavis? Archaeopteryx Wellnhoferia Anchiornithidae? †Dromaeosauridae see Dromaeosauridae †Troodontidae see Troodontidae...
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Saurornithoididae, Zanabazar is now thought to be a derived member of Troodontidae. The cladogram below shows the phylogenetic position of Zanabazar among...
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It has been suggested that this article be merged into Troodontidae. (Discuss) Proposed since April 2024....
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to birds than to oviraptorosaurs. These include Dromaeosauridae and Troodontidae (historically grouped under Deinonychosauria) and Avialae (including...
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Yixianosaurus †Archaeopterygidae Alcmonavis? Archaeopteryx Wellnhoferia Anchiornithidae? †Dromaeosauridae see Dromaeosauridae †Troodontidae see Troodontidae...
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centimetres (1.2 in). Lü and colleagues assigned Xixiasaurus to the family Troodontidae based on its high tooth-count, constriction between the crowns and roots...
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