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Charles Robert Knight (October 21, 1874 – April 15, 1953) was an American wildlife and paleoartist best known for his detailed paintings of dinosaurs and other prehistoric animals.
Tyrannosaurus (/ t ɪ ˌ r æ n ə ˈ s ɔː r ə s, t aɪ-/) [a] is a genus of large theropod dinosaur.The type species Tyrannosaurus rex (rex meaning 'king' in Latin), often shortened to T. rex or colloquially T-Rex, is one of the best represented theropods.
Previously discovered T. rex skeletons were usually missing over half of their bones. [10] It was later determined that Sue was a record 90 percent complete by bulk, [11] and 73 percent complete counting the elements. [12] Of the 360 known T. rex bones, around 250 have been recovered. [1]
Wankel Rex: National Museum of Natural History: Washington, D.C. District of Columbia: USA: On lease from U.S. Army Corps of Engineers [6] Skeleton, mounted (copy) Tyrannosaurus: MOR 555 (copy) Big Mike Museum of the Rockies: Bozeman: Montana: USA: Big Mike is a bronze cast of MOR 555 Skeleton, mounted (copy) Tyrannosaurus: MOR 555 (copy)
However, there is no direct evidence T-Rex and Triceratops ever fought. Furthermore, a lot of Triceratops only had traces indicating scavenging. Yet healed injuries on either a T-Rex or Triceratops would be a clear sign of a fight. [18] A juvenile T-Rex has a bite force of 5,641 newtons compared to the 35,000 newtons of a full-grown adult.
This sudden change in growth rate may indicate physical maturity, a hypothesis that is supported by the discovery of medullary tissue in the femur of an 18-year-old T. rex from Montana (MOR 1125, also known as "B-rex"). [51] Medullary tissue is found only in female birds during ovulation, indicating that "B-rex" was of reproductive age. [52]
Dinosaur Comics is a constrained webcomic by Canadian writer Ryan North.It is also known as "Qwantz", after the site's domain name, "qwantz.com". The first comic was posted on February 1, 2003, [1] although there were earlier prototypes.
Lythronax (LYE-thro-nax) is a genus of tyrannosaurid dinosaur that lived in North America around 81.9-81.5 million years ago during the Late Cretaceous period.The only known specimen was discovered in Utah in the Wahweap Formation of the Grand Staircase–Escalante National Monument in 2009, and it consists of a partial skull and skeleton.