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Dinosaurs were the dominant terrestrial vertebrate animals for over 160 million years, from the late Triassic period (about 230 million years ago) until the end of the Cretaceous period (about 65 million years ago), when the Cretaceous–Tertiary extinction event caused the extinction of most dinosaur species. The fossil record indicates that birds evolved from theropod dinosaurs during the Jurassic period, and most paleontologists regard them as the only clade of dinosaurs to have survived until the present day. Dinosaurs were a varied group of animals. Paleontologists have identified over 500 distinct genera and more than 1,000 different species of dinosaur, and remains have been found on every continent on Earth. Some dinosaurs were herbivorous, others carnivorous. Some were bipedal, others quadrupedal, and others were able to shift between these body postures. Many species developed elaborate skeletal modifications such as bony armor, horns or crests. Although generally known for their large size, many dinosaurs were human-sized or even smaller. Most major groups of dinosaurs are known to have built nests and laid eggs, suggesting an oviparity similar to that of modern birds. The term "dinosaur" was coined in 1842 by Sir Richard Owen and derives from Greek δεινός (deinos) "terrible, powerful, wondrous" + σαῦρος (sauros) "lizard". Through the first half of the twentieth century, most of the scientific community believed dinosaurs to have been sluggish, unintelligent cold-blooded animals. Most research conducted since the 1970s, however, has indicated that dinosaurs were active animals with elevated metabolisms and numerous adaptations for social interaction. Since the first dinosaur fossils were recognized in the early nineteenth century, mounted dinosaur skeletons have been major attractions at museums around the world, and dinosaurs have become a part of world culture. They have been featured in best-selling books and films such as Jurassic Park, and new discoveries are regularly covered by the media. As a result, the word "dinosaur" has entered the vernacular, although its use and meaning in colloquial speech may be inconsistent with modern science. In English, for example, "dinosaur" is commonly used to describe anything that is impractically large, slow-moving, obsolete, or bound for extinction. From Wikipedia under the
GNU Free Documentation License What was the most Intelligent of all the dinosaurs? Q. Thanks to anonimous, I have a clearer view of my last question, "Besides for Velociraptors, which dinosaurs would have evolved?" But it also leads me to another question. "What was the most intelligent of all the dinosaurs?" There's got to be another dinosaur that's just as, or more intelligent as the velociraptor. But what that dinosaur is, is unknown to me. Any one a dinosaur expert? Asked by wparke007 - Sun Oct 12 00:16:05 2008 - - 1 Answers - 1 Comments A. Actually it is speculated that Velociraptors were not very smart at all! If perhaps you were referring to the "Jurassic Park" series in which one sees 'Velociraptors' (which were actually Deinonychus', a much larger relative of Velociraptors) opening doors, dinosaurs were actually in no way capable of such a feat. It is estimated that almost all dinosaurs were less intelligent than birds! One way for paleontologists to guess how smart a dinosaur is the ratio between the size of the brain cavity and the body. The Cretaceous' Troodon, a speedy, bird-like dinosaur, best fits this description. It has one of the largest-known brains of any dinosaur. It is speculated this animal had amazing vision, including binocular vision, or depth… [cont.] Answered by Roxy Riley - Mon Oct 13 22:20:55 2008 How much was the impact done to Earth from the meteorite to the dinosaurs? Q. I heard that a meteorite before Man was born that it wiped out all the dinosaurs in the whole of Earth. How can the impact of the meteorite wipe out all of the dinosaurs across Earth? Asked by geneneius - Wed Mar 5 05:21:28 2008 - - 3 Answers - 1 Comments A. It was an exceptionally large and powerful impact involving a ten kilometre diameter lump of rock travelling at high speed. That's kind of the equivalent of simultaneously detonating the entire arsenal of nuclear weapons, except that comparison would be an underestimate. Nevertheless, the result would be more than a slight bang. Whether that impact 65 million years ago accounts for the entire extinction even(s) is another matter. It certainly seems to have contributed. Update < Answered by KTDykes - Wed Mar 5 05:30:29 2008 What kind of weapons did the cavemen use to fight the dinosaurs?
Q. I read that every genoration gets bigger then there parents. If that so, cavemen were small. How did really small people fight dinosaurs? Did they use some kind of modern weapon thats just made of rocks or did they fight with marshal arts? Asked by Grytpypethynne - Sun Jan 24 01:43:52 2010 - - 6 Answers - 0 Comments A. A few of the contemporaries of the Dinosaur are still with us Sharks and Alligators and Crocodiles.Before man or very many mammals appeared,the Dinosaur was extinct. The Digitization of the making of movies makes them seem real. It is only through the miracle of real science that this science fiction can be created. So to indulge you fantasy,go to the legends of the dragons and the men who slew them. If you wish to learn about size of generations and nutrition,read Humankind by Peter Farb. On size you will find the role of nutrition in creating the peasant body type,for one thing. Answered by jesse - Sun Jan 24 09:03:05 2010 From Yahoo Answer Search: "Dinosaurs" See also:
 news.google.com Macon County News When he was three years old Scott's father gave him a book titled Big Little Dinosaur . After having the book read to him until the cover fell off, ... news.google.com New York Post 'Ice Age: Dawn of the Dinosaurs ' and '2012' are ranked second and fourth based on their worldwide grosses but didn't make it into the top 10 list of most ... and more » news.google.com California Chronicle Also known as Ray Andersen, Mr. Ray performs original pop-rock songs about aliens, dinosaurs and other fun stuff and encourages kids to join him on stage ... and more » From Google News Search: "Dinosaurs"  earth.columbia.edu 262px x 350px | 11.80kB [source page] Walter Alvarez the maverick geologist who convinced a skeptical world that dinosaurs and many other living things on Earth were wiped out by a huge fireball from space has won the highly esteemed Vetlesen Prize Considered by many to be the earth sciences equivalent of a Nobel the $250 000 award is funded by the New York based G Unger Vetlesen Foundation and administered by Lamont Doherty  team-bhp.com 815px x 602px | 146.40kB [source page]  softpedia.com 675px x 900px | 812.50kB [source page] Screenshot 2 of Legendary Dinosaurs Plesiosaurus Screensaver The image below has been reduced in size Click on it to see the full version From Yahoo Image Search: "Dinosaurs"  magblog.audubon.org Phil McKenna ue, 23 Feb 2010 17:44:04 GM Xu is a leading proponent of the theory that birds evolved from . dinosaurs. and over the past decade has uncovered a number of really unusual fossils, from a pint sized . dinosaur. with four wings to a feathered ancestor of Tyrannosaurus rex ...  meganvanfleet.blogspot.com Megan Van Fleet hu, 25 Feb 2010 02:22:00 GM DINOSAURS. ! We had a fun fun fun surprise weekend when Ib and Greg came down last weekend! Ib and I planned on surprising Jim, and being the stealthy ladies we are, were able to pull it off! (I'm sure they were also ...  blogs.smithsonianmag.com Brian Switek Fri, 05 Feb 2010 15:04:28 GM In this week's issue of Science, a second team of scientists has restored a recently-discovered feathered . dinosaur. , Anchiornis huxleyi, in living color. From Google Blog Search: "Dinosaurs" |
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