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A study published in 2021 by Pasha van Bijlert et al., calculated the preferred walking speed of Tyrannosaurus, reporting a speed of 1.28 meters per second (4.6 km/h; 2.9 mph). While walking, animals reduce their energy expenditure by choosing certain step rhythms at which their body parts resonate .
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.
From 1977 to 2009 saw the publications of several genera. In Asia they include Shanshanosaurus (1977), [12] Maleevosaurus (1992), [13] and Raptorex (2009), [14] while in North America saw Nanotyrannus (1988), [15] Dinotyrannus and Stygivenator (1995). [16] These genera, however are controversial as the remains of these animals are immature or ...
The original was produced by Paul Sereno in 1998, and included all tyrannosauroids closer to Tyrannosaurus than to either Alectrosaurus, Aublysodon or Nanotyrannus. [39] However, Nanotyrannus is often considered to be a juvenile Tyrannosaurus rex, while Aublysodon is usually regarded as a nomen dubium unsuitable for use in the definition of a ...
Nanuqsaurus (meaning "polar bear lizard") is a genus of tyrannosaurine theropod dinosaur known from the Late Cretaceous period (middle Maastrichtian age) Prince Creek Formation of the North Slope of Alaska, having lived roughly 70-68 million years ago.
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Gorgosaurus (/ ˌ ɡ ɔːr ɡ ə ˈ s ɔːr ə s / GOR-gə-SOR-əs; lit. ' dreadful lizard ') is a genus of tyrannosaurid theropod dinosaur that lived in western North America during the Late Cretaceous Period (), between about 76.5 and 75 million years ago. [1]
With no buyers, the fossils were slated to be sold to a private collector instead. In 2013, Larson presented a poster about the tyrannosaur (also referred to as "Bloody Mary", specimen number BHI 6437) at the annual Society of Vertebrate Paleontology meeting, pronouncing it as a potential specimen of the debated tyrannosaur genus "Nanotyrannus ...