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Tyrannosaurus rex, or T. rex, whose name means “tyrant lizard king,” is a species of theropod dinosaur that lived in North America at the end of the Cretaceous Period, between about 68 and 66 million years before present (mybp). T. rex is the only species within the genus Tyrannosaurus, which is part of the superfamily Tyrannosauroidea.
Cleveland tyrannosaur skull, CMNH 7541. Volume renderings (stereopairs) of digitally extracted braincase derived from CT data in A, left lateral; B, left rostroventrolateral; C, caudal views.
- General Overview of Tyrannosaurus Rex
- Tyrannosaurus Rex Anatomy and Physiology - Body, Skull, Arms, and Speed
- Tyrannosaur Legs and Tail - Built For Speed
- Was Tyrannosaurus Rex A Predator Or Scavanger?
- Did T. Rex Have Feathers? It Was Either Fully Scaled Or Mostly scaled.
- What Sounds Did T. Rex Make? Low Frequency Rumbles and Chirps - No Roars!
- Recommended T. Rex Dinosaur Books and Educational Items
Tyrannosaurus rex is one of the largest and most popular members of the Tyrannosaurus family of dinosaurs.This is this is probably because it was one of the most dangerous predators to ever walk earth. T. rex ischaracterized by an oversized head with forward facing eyes, huge muscular jaws, robust serrated teeth,a powerful tail, and tiny arms. T. r...
T. rex is a very specialized dinosaur with many unique anatomical features. These next paragraphshighlight some of the main features of this apex predator: T. rex could crush other dinosaurs bones,it actually used its tiny arms, and it was fast and agile!
In the past, T. rex was thought of as a slow and cumbersome dinosaur. It was often thought that due to its size,overcoming its own inertia would be difficult to do. If it could not move as fast as its prey, T. rex would be a terrible hunter,and would therefore need to resort to scavenging. Walking speeds from the two trackways gives walking speeds ...
The debate as to whether or not T. rex was a predator or scavenger is not really a big debate. Mostpaleontologists agree that T. rex was an opportunistic carnivore. This conclusion is not only drawnfrom fossils but also from looking at predators today. There is no black and white line that separatesa "predator" from a "scavenger." Nature is not tha...
Since the discovery of feathered dinosaurs in the 1990's, it has become clear that many families of theropod dinosaurshad feathers, or at least, primitive feather like structures (protofeathers). Well known theropods such as velociraptorand microraptor had protofeathers. Tyrannosaurus is a very large theropod, so could it have also had feathers?To ...
Although we will never know exactly what a T. rex sounded like, paleontologists can make educated guesses based on preserved fossil voice boxes, earbones, and making comparisons. In 2017 Professor Julia Clark of Texas University recreated the sound of Tyrnnosaurus using a few pieces of information: Closed-Mouth Sounds: She knew Tyrannosaurus probab...
R. Amiot, X. Wang, Z. Zhou, X. Wang, E. Buffetaut, C. Lecuyer, Z. Ding, F. Fluteau, T. Hibino, N. Kusuhashi, J. Mo, V. Suteethorn, Y. Wang, X. Xu, F. Zhang. Oxygen isotopes of East Asian dinosaurs reveal exceptionally cold Early Cretaceous climates. Proceedings of the National Academy of Sciences, 2011; DOI: 10.1073/pnas.1011369108 T. Carr, D. Varr...
the North American tyrannosaur Albertosaurus sarcophagus to produce an age-standardized ecological life table for a nonavian dinosaur population. 1Department of Biological Science, Florida State University, Tallahassee, FL 32306, USA. 2Department of Biological Sciences, University of Alberta, Alberta T6G 2E, Canada.
Femoral lengths ranged from 0.32 to 1.16 m, and corresponding total lengths ranged from 2.2 to 10.1 m (table S1). Estimated ages for the dinosaurs spanned 2 to 28 years (Table 1). A life table (Table 1) (3, 8) was constructed using these data, and a graph of age (x) versus survivorship (log lx) was made (Fig. 1).
Jul 14, 2006 · Tyrannosaur Life Tables: An Example of Nonavian Dinosaur Population Biology. The size and age structures for four assemblages of North American tyrannosaurs—Albertosaurus, Tyrannosaurus, Gorgosaurus, and Daspletosaurus—reveal a pronounced, bootstrap-supported pattern of….
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Feb 2, 2016 · Our phylogenies illustrate that the body plan of the colossal species evolved piecemeal, imply no clear division between northern and southern species in western North America as had been argued...
- Stephen L. Brusatte, Thomas D. Carr
- 2016
