from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A very large carnivorous dinosaur of the Upper Cretaceous Period of North America, characterized by small forelimbs and a large head.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any large bipedal carnivorous dinosaur, of the family Tyrannosauridae, that lived in North America during the Cretaceous period.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. large carnivorous bipedal dinosaur having enormous teeth with knifelike serrations; may have been a scavenger rather than an active predator; later Cretaceous period in North America
They can break a tyrannosaur's neck with a swipe of their tail.
Say "tyrannosaur" and most people picture a clunky, heavy-set beast with huge teeth and a brutish character.
One thing that we see in other tyrannosaur species is evidence that maybe some of these young animals actually palled around in groups of juveniles - sort of rambling gangs of young tyrannosaurs - potentially even avoiding the adults.
Analysis of the youngest and most complete dinosaur skull of any species of tyrannosaur finds significant differences between the young and old of the same species.
The conference began with a Wednesday evening welcome reception, held at Chicago's Field Museum, where 28 mostly Illinois breweries had set up beer stations among two stuffed elephants, a couple of totem poles and a tyrannosaur skeleton.
Scientists from Cambridge, London and Melbourne have found the first ever evidence that tyrannosaur dinosaurs existed in the southern continents.
Scientists find first ever southern tyrannosaur dinosaur: Tyrannosaurus rex, once believed to have only roamed the Earth north of the Equator, may also have lived in the southern hemisphere, paleontologists said Thursday.
Tyrannosaurus rex may have towered over its Cretaceous competition, but for their first 80 million years, most tyrannosaur species were small-timers -- no bigger than humans, researchers ...
Tyrannosaurus rex may have towered over its Cretaceous competition, but for their first 80 million years, most tyrannosaur species were small-timers -- no bigger than humans, researchers say.
Dr. MARK NORELL (Curator of fossil reptiles, American Museum of Natural History): You know, we've really doubled the tyrannosaur diversity in the last 10 years, and found, you know, ones that aren't just the giant ones like Tyrannosaurus rex, but smaller ones like raptorex, feathered ones like dilong and stuff like that.
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