Let's add some color now to a story many millions of years old - the story of the dinosaurs. Scientists have been able to learn a lot about dinosaurs by studying fossils. Barnum Brown, assistant curator of the American Museum of Natural History, found the first partial skeleton of T. rex in eastern Wyoming in 1900. Brown found another partial skeleton in the Hell Creek Formation in Montana in 1902, comprising approximately 34 fossilized bones. [6] Writing at the time Brown said "Quarry No. 1 contains the femur, pubes, humerus, three vertebrae and two undetermined bones of a large Carnivorous Dinosaur not described by Marsh.... I have never seen anything like it from the Cretaceous." [7] Henry Fairfield Osborn, president of the American Museum of Natural History, named the second skeleton T. rex in 1905. The generic name is derived from the Greek words τύραννος ( tyrannos, meaning "tyrant") and σαῦρος ( sauros, meaning "lizard"). Osborn used the Latin word rex, meaning "king", for the specific name. The full binomial therefore translates to "tyrant lizard the king" or "King Tyrant Lizard", emphasizing the animal's size and presumed dominance over other species of the time. [6] Dynamosaurus imperiosus holotype, Natural History Museum Smith, J. B. (December 1, 2005). "Heterodonty in Tyrannosaurus rex: implications for the taxonomic and systematic utility of theropod dentitions". Journal of Vertebrate Paleontology. 25 (4): 865–887. doi: 10.1671/0272-4634(2005)025[0865:HITRIF]2.0.CO;2. S2CID 86184190. Paul rejected the objections raised by critics, insisting that they are unwilling to consider that Tyrannosaurus might represent more than one species. [74] In a subsequent paper awaiting publication, Paul maintained the conclusion that Tyrannosaurus consists of three species. He pointed out that the criticism of the study naming T. imperator and T. regina only focused on two of the features used to distinguish the two new species (the number of small incisiform teeth and femur robustness), while the original study also compared the robustness of other bones as well (the maxilla, dentary, humerus, ilium and metatarsals). Furthermore, Paul argued that Tyrannosaurus can be separated into three different species based on the shape of knob-like bumps ('postorbital bosses') behind the eyes. Paul also argued that past research concluding that Tyrannosaurus only consists of one species ( T. rex) has simply assumed that all Tyrannosaurus skeletons are a single species, and that many new dinosaur species have been named on the basis of fewer differences than he and his colleagues used when proposing T. imperator and T. regina. [75] Nanotyrannus Former holotype of Nanotyrannus lancensis, now interpreted as a juvenile Tyrannosaurus

Carr, T.D. (June 5, 2020). "A high-resolution growth series of Tyrannosaurus rex obtained from multiple lines of evidence–Author Dr. Thomas D. Carr discusses his new study". PeerJblog . Retrieved June 10, 2020. Larson P (2013), "The validity of Nanotyrannus Lancensis (Theropoda, Lancian – Upper Maastrichtian of North America)", Society of Vertebrate Paleontology: 73rd annual meeting, Abstracts with Programs, p. 159. a b c Holtz, T. R. (1994). "The Phylogenetic Position of the Tyrannosauridae: Implications for Theropod Systematics". Journal of Paleontology. 68 (5): 1100–1117. Bibcode: 1994JPal...68.1100H. doi: 10.1017/S0022336000026706. JSTOR 1306180. S2CID 129684676.Tyrannosaur teeth could crush bone, and therefore could extract as much food ( bone marrow) as possible from carcass remnants, usually the least nutritious parts. Karen Chin and colleagues have found bone fragments in coprolites (fossilized feces) that they attribute to tyrannosaurs, but point out that a tyrannosaur's teeth were not well adapted to systematically chewing bone like hyenas do to extract marrow. [196] Speaking of the display, the Amazfit T-Rex Pro includes an essential sensor that all smartwatches should have — an ambient light sensor. This means that there's no fussing with settings to increase or decrease the brightness depending on lighting conditions; the watch just does it for you. Fiffer, S. (2000). "Jurassic Farce". Tyrannosaurus Sue. W. H. Freeman and Company, New York. pp. 121–122. ISBN 978-0-7167-4017-9.

Empire Magazine - Access All Areas: Jurassic World, Archived from https://web.archive.org/web/20150609212747/http://www.empireonline.com/jurassicworld/ Rozhdestvensky, A. K. (1965). "Growth changes in Asian dinosaurs and some problems of their taxonomy". Paleontological Journal. 3: 95–109.a b Currie, P. J.; Hurum, J. H.; Sabath, K. (2003). "Skull structure and evolution in tyrannosaurid dinosaurs" (PDF). Acta Palaeontologica Polonica. 48 (2): 227–234 . Retrieved October 8, 2008. Other tyrannosaurid fossils found in the same formations as T. rex were originally classified as separate taxa, including Aublysodon and Albertosaurus megagracilis, [61] the latter being named Dinotyrannus megagracilis in 1995. [76] These fossils are now universally considered to belong to juvenile T. rex. [77] A small but nearly complete skull from Montana, 60 centimeters (2.0ft) long, might be an exception. This skull, CMNH 7541, was originally classified as a species of Gorgosaurus ( G. lancensis) by Charles W. Gilmore in 1946. [78] In 1988, the specimen was re-described by Robert T. Bakker, Phil Currie, and Michael Williams, then the curator of paleontology at the Cleveland Museum of Natural History, where the original specimen was housed and is now on display. Their initial research indicated that the skull bones were fused, and that it therefore represented an adult specimen. In light of this, Bakker and colleagues assigned the skull to a new genus named Nanotyrannus (meaning "dwarf tyrant", for its apparently small adult size). The specimen is estimated to have been around 5.2 meters (17ft) long when it died. [79] However, In 1999, a detailed analysis by Thomas Carr revealed the specimen to be a juvenile, leading Carr and many other paleontologists to consider it a juvenile T. rex individual. [80] [81] Reconstructed skeleton of "Jane", Burpee Museum of Natural History The biggest selling points to the Amazfit T-Rex Pro are its excellent battery life, "survive anything "build quality, and wide range of fitness features. If those are things you value most in a smartwatch, you'll likely love this device. If you need the notifications you receive to be actionable or even noticeable as to where it's coming from, you may not enjoy it quite so much.