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  2. List of dinosaur genera - Wikipedia

    en.wikipedia.org/wiki/List_of_dinosaur_genera

    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.

  3. Dinosaur - Wikipedia

    en.wikipedia.org/wiki/Dinosaur

    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 ...

  4. List of dinosaurs of the Morrison Formation - Wikipedia

    en.wikipedia.org/wiki/List_of_dinosaurs_of_the...

    Images Allosaurus [7] A. fragilis [14] Colorado, New Mexico, Oklahoma, South Dakota, Utah and Wyoming, Brushy Basin member [16] [50] [17] [66] [9] [88] "At least [three] complete skulls, many partial skulls and skull elements, many partial and complete skeletons representing at least 60 individuals." [89] It was the most common large carnivore ...

  5. Where did dinosaurs first evolve? Scientists have an answer

    www.aol.com/news/where-did-dinosaurs-first...

    Then, about 201 million years ago, a huge extinction event wiped out many of their competitors, allowing dinosaurs to take over as the dominant land vertebrates." (Reporting by Will Dunham ...

  6. Portal:Dinosaurs - Wikipedia

    en.wikipedia.org/wiki/Portal:Dinosaurs

    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 (mya), although the exact origin and timing of the evolution of dinosaurs is a subject of active research.

  7. Portal:Dinosaurs/Selected picture - Wikipedia

    en.wikipedia.org/wiki/Portal:Dinosaurs/Selected...

    For additional high quality dinosaur images, see the Dinosaur Image Review Tyrannosaurus rex skeleton at the Carnegie Museum of Natural History, Pittsburgh. Photo credit: User:ScottRobertAnselmo

  8. How dinosaurs changed the science and society of Victorian ...

    www.aol.com/dinosaurs-changed-science-society...

    Dinosaur bones weren’t exactly new discoveries, but the explanations were. Many of the same bones that Buckland imagined as belonging to a megalosaurus had been found in the 17th century ...

  9. List of North American dinosaurs - Wikipedia

    en.wikipedia.org/wiki/List_of_North_American...

    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 ...