Dakotaraptor: A relatively recent discovery, Dakotaraptor lived during the Late Cretaceous period. It was large for a dromaeosaurid and had a robust build, with a particularly large sickle claw on each foot. Back to page index Family: Abelisauridae Carnotauruswas a abelisaurid. Click on the...
An artist rending of aT-rex. The largest one named Scotty was discovered in Canada's Badlands. It's on display at the Royal Saskatchewan Museum in Canada.SCIEPRO / Getty Images Most people assume that the North AmericanTyrannosaurus rex—at 40 feet from head to tail and seven to nine tons...
This discovery suggests that all ornithomimid dinosaurs would have had feathers. The specimens reveal an interesting pattern of change in feathery plumage during the life of Ornithomimus. "This dinosaur was covered in down-like feathers throughout life, but only older individuals developed larger ...
The discovery in recent years of additional skull material of the rare carnivorous dinosaur prompts the first thorough description of this animal. This species, known only from the Upper Cretaceous strata of North America, is closely rel... Currie,J P. - 《Canadian Journal of Earth Sciences》 ...
The effect of volcanic ash falls on the evolution of dinosaurs on the west side of the Western Interior Seaway in Late Cretaceous time Recent publications have demonstrated the existence of Paleocene dinosaurs in the San Juan Basin of northwest New Mexico and southwest Colorado and date the final...
In recent years, more and more early mammal fossils have been discovered, and they show that mammals were well on their way to diversifying long before the dinosaurs disappeared. The mammal fossil record also shows that mammal diversity suffered from the meteor strike, but mammals recovered and ...
Harlen Bretz’s Spokane Flood as the origin of the channelled scabland in eastern Washington, USA, should not be so freely dismissed.In spite of the recent dominance of the meteorite hypothesis, scientists continue to add new causes or subsidiary causes for the extinction of the dinosaurs. ...
The discovery of Early Cretaceous birds in China. Courier Forschungsinstitut Senckenberg 181, 9–22 (1995). Google Scholar Holtz, T. R. J The phylogenetic position of the Tyrannosauridae: implications for theropod systematics. J. Paleontol. 68, 1100 –1117 (1994). Article Google Scholar ...
9 RegisterLog in Sign up with one click: Facebook Twitter Google Share on Facebook duck-billed dinosaur (redirected fromduck-billed dinosaurs) Thesaurus Encyclopedia duck-billed dinosaur (dŭk′bĭld′) n. Seehadrosaurid. American Heritage® Dictionary of the English Language, Fifth Edition. ...
For decades,Psittacosaurus(the "parrot lizard") was one of the earliest identified ceratopsians, until the recent discovery of a handful of eastern Asian genera that predated this dinosaur by millions of years. As befitting a ceratopsian that lived during the early to middle Cretaceous perio...