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Brachiosaurus humerus bone. In 1903, Elmer Samuel Riggs described and named Brachiosaurus. In 1904, he created a new sauropod family, the Brachiosauridae. [9] [1] He published a complete description of the phenotype after examining the humerus, femur, coracoid, and sacrum of the Brachiosaurus holotype that had been prepared at the Field ...
Brachiosaurus (/ ˌ b r æ k i ə ˈ s ɔː r ə s /) is a genus of sauropod dinosaur that lived in North America during the Late Jurassic, about 154 to 150 million years ago. [1] It was first described by American paleontologist Elmer S. Riggs in 1903 from fossils found in the Colorado River valley in western Colorado, United States.
As most dinosaur paleontologists have advocated a shift away from traditional, ranked Linnaean taxonomy in favor of rankless phylogenetic systems, [3] few ranked taxonomies of dinosaurs have been published since the 1980s.
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Many modern birds are arboreal (tree climbing), and this was also true of many Mesozoic birds, especially the enantiornithines. [177] While some early bird-like species may have already been arboreal as well (including dromaeosaurids) such as Microraptor [ 178 ] ) most non-avialan dinosaurs seem to have relied on land-based locomotion.
Oldest human DNA reveals lost branch of the human family tree. Katie Hunt, CNN. December 13, 2024 at 10:49 AM. Sign up for CNN’s Wonder Theory science newsletter.
Sonorasaurus is a genus of brachiosaurid dinosaur from the Early to Late Cretaceous (Albian to Cenomanian stages, around 112 to 93 million years ago).It was a herbivorous sauropod whose fossils have been found in southern Arizona in the United States.
Next on the royal family tree is Prince William, Duke of Cambridge, the first-born son of Prince Charles and his late wife, Diana, Princess of Wales. By virtue of his being male, from the moment ...