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Troodontidae / t r oʊ. ə ˈ d ɒ n t ɪ d iː / is a clade of bird-like theropod dinosaurs from the Late Jurassic to Late Cretaceous. During most of the 20th century, troodontid fossils were few and incomplete and they have therefore been allied, at various times, with many dinosaurian lineages.
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The first is the clade Arctometatarsalia, made up of tyrannosauroids, ornithomimosaurs, and troodontids, because all of these coelurosaurs had pinched middle metatarsal bones in their feet. In this proposed classification system, the tyrannosauroids were supposedly basal to a clade known as Bullatosauria , which was made up of the Troodontidae ...
While Pectinodon is only known from teeth, its larger family Troodontidae is known from much more complete specimens. They were small, bird-like feathered bipedal maniraptorans with proportionally large eyes and brains. Like dromaeosaurids, they possessed a "sickle-claw" on the second toe of each foot. See the Troodontidae article for more ...
Although several Troodontid teeth were found, with the troodontid Koparion named in 1994, [2] [3] a well preserved skeleton wasn't found until in 2001, a field crew from the Tate Museum supervised by William Wahl unexpectedly discovered the type skeleton Hesperornithoides in Jimbo Quarry of the Morrison Formation, overlying the excavation site of Supersaurus vivianae, near Douglas, Wyoming. [1]
This is an accepted version of this page This is the latest accepted revision, reviewed on 18 January 2025. Not to be confused with Planet Dinosaur. 2003 American TV series or program Dinosaur Planet Starring Scott D. Sampson Narrated by Christian Slater Composer Dean Grinsfelder Country of origin United States No. of seasons 1 No. of episodes 4 Production Executive producers Jean Raymond ...
Historical and outdated illustration of Elopteryx on a 2005 Romanian stamp. In 1975, the distal tibiotarsi BMNH A1588 and BMNH A1528, together with BMNH A4359, were by Colin James Oliver Harrison and Cyril Alexander Walker removed from Elopteryx, redescribed as Bradycneme draculae and Heptasteornis andrewsi respectively, and used to establish a supposed family of gigantic two metre tall owls ...
Deinonychosauria is a clade of paravian dinosaurs which lived from the Late Jurassic to the Late Cretaceous periods. Fossils have been found across the globe in North America, Europe, Africa, Asia, South America, and Antarctica, [2] with fossilized teeth giving credence to the possibility that they inhabited Australia as well. [3]