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Page:Tyrannosaurus and Other Cretaceous Carnivorous Dinosaurs.pdf/8 Metadata This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.
Mounted skeletons of Tyrannosaurus (left) and Apatosaurus (right) at the AMNH. Dinosaurs are a diverse group of reptiles of the clade Dinosauria. They first appeared during the Triassic period, between 243 and 233.23 million years ago, although the exact origin and timing of the evolution of dinosaurs is the subject of active research.
This is a partial list of dinosaur finds in the United Kingdom, arranged by genus alphabetically. List of dinosaurs Genus Picture Period Discovery locations and dates Acanthopholis Cretaceous (late) Folkestone, Kent in c. 1865 Gault, Kent in 2000 Altispinax Cretaceous (early) Battle, East Sussex in 1856 Anoplosaurus Cretaceous (early) Cambridgeshire, no later than 1878 Aristosuchus Cretaceous ...
While the dinosaurs' modern-day surviving avian lineage (birds) are generally small due to the constraints of flight, many prehistoric dinosaurs (non-avian and avian) were large-bodied—the largest sauropod dinosaurs are estimated to have reached lengths of 39.7 meters (130 feet) and heights of 18 m (59 ft) and were the largest land animals of ...
Predatory dinosaurs from this time period included the tyrannosaurids Tyrannosaurus, Nanotyrannus (which may just be a juvenile of the former) and Dryptosaurus, the ornithomimids Ornithomimus, Dromiceiomimus, Struthiomimus, the oviraptorids Anzu, Leptorhynchos and Ojoraptorsaurus, the troodontids Pectinodon, Paronychodon and Troodon, the ...
Dinosaur classification began in 1842 when Sir Richard Owen placed Iguanodon, Megalosaurus, and Hylaeosaurus in "a distinct tribe or suborder of Saurian Reptiles, for which I would propose the name of Dinosauria." [1] In 1887 and 1888 Harry Seeley divided dinosaurs into the two orders Saurischia and Ornithischia, based on their hip structure. [2]
Chart of the time-averaged census for large-bodied dinosaurs from the entire Hell Creek Formation in the study area According to studies published in 2021 by Charles Marshall et al., the total population of adult Tyrannosaurus at any given time was perhaps 20,000 individuals, with computer estimations also suggesting a total population no lower ...
This category lists dinosaur images that have been reviewed and approved at Wikipedia:WikiProject Dinosaurs/Image review either for their scientific accuracy or for their historical value. Subcategories