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The Ultimate Dinosaur Encyclopedia

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a b c "The Birth of Dinosaurs: Richard Owen and Dinosauria". Biodiversity Heritage Library. October 16, 2015 . Retrieved March 15, 2023. It is now certain (from fossils discovered in China: see Jehol biota) that small theropods had feathers. This fits well with the idea that they were warm-blooded, and that the origin of birds can be traced to a line of small theropods. a b c d e f g Weishampel, Dodson & Osmólska 2004, pp.210–231, chpt. 11: "Basal Avialae" by Kevin Padian.

Among the earliest ornithischian ('bird-hipped') dinosaurs is Pisanosaurus 230–220mya. Although Lesothosaurus comes from 199 to 189mya, skeletal features suggest that it branched from the main Ornithischia line at least as early as Pisanosaurus. Robert Plot" (PDF). Learning more. Oxford: Oxford University Museum of Natural History. 2006. Archived from the original (PDF) on October 1, 2006 . Retrieved November 14, 2019.Ornithopoda (various sizes; bipeds and quadrupeds; evolved a method of chewing using flexible skulls and many teeth) Weishampel, David B; Dodson, Peter and Osmólska, Halszka (eds) 2004. The Dinosauria. 2nd ed. Berkeley: University of California Press. ISBN 0-520-24209-2 St. Fleur, Nicholas (8 December 2016). "That thing with feathers trapped in amber? It was a dinosaur tail". New York Times . Retrieved 8 December 2016.

Main article: Dinosaur renaissance John Ostrom's original restoration of Deinonychus, published in 1969 Text is available under the Creative Commons Attribution-ShareAlike License and the GFDL; additional terms may apply. See Terms of Use for details. Allen, Vivian; Bates, Karl T; Li, Zhiheng and Hutchinson John R. 2013. Linking the evolution of body shape and locomotor biomechanics in bird-line archosaurs. Nature 497, 104–107. [2]; popular summary [3] a b Brett-Surman, M. K.; Holtz, Thomas R.; Farlow, James O. (June 27, 2012). The Complete Dinosaur. Indiana University Press. p.25. ISBN 978-0-253-00849-7. The crests and frills of some dinosaurs, like the marginocephalians, theropods and lambeosaurines, may have been too fragile to be used for active defense, and so they were likely used for sexual or aggressive displays, though little is known about dinosaur mating and territorialism. Head wounds from bites suggest that theropods, at least, engaged in active aggressive confrontations. [169]Get your fill of dinosaur facts and fun, and find out all about the reptiles that once dominated our planet. Curry Rogers, Kristina A.; Wilson, Jeffrey A., eds. (2005). The Sauropods: Evolution and Paleobiology. Berkeley: University of California Press. ISBN 978-0-520-24623-2. LCCN 2005010624. OCLC 879179542. Discover the world of dinosaurs with our comprehensive list of all known dinosaur species. From the ferocious T-Rex to the majestic Stegosaurus, our list includes over 300 dinosaur names, each with detailed information and images.

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