Dinosaurs

A:

There is evidence that dinosaurs did not have a single, uniform and universal diet but rather a wide variety of dietary habits, with evidence supporting the idea that carnivorous, herbivorous and omnivorous species all existed. Different feeding styles were also likely, with some carnivorous species hunting prey such as mammals and small reptiles, while other carnivores may have been opportunistic carrion scavengers. There was likely even a good range of dietary variety amongst the herbivorous dinosaurs, which may have made up the majority of all dinosaur species.

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  • What was the lifespan of a stegosaurus?

    Q: What was the lifespan of a stegosaurus?

    A: Scientists approximate dinosaur lifespan by attempting to determine the metabolism of the animal, looking at its size and bone growth, and comparing with similar animals that are still around today. Based on these factors, a stegosaurus may have lived 75 to 100 years.
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  • What is a list of omnivorous dinosaurs?

    Q: What is a list of omnivorous dinosaurs?

    A: Omnivorous dinosaurs include Anserimimus, Deinocheirus, Gallimimus and Othnielia. Fruitadens haagarorum was a small dinosaur known to be omnivorous by the presence of both sharp teeth resembling canines and leaf-shaped teeth suitable for grinding plants. As a heterdontosaurid, it exhibited a shift in diet from its earlier herbivorous relatives.
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  • What was the largest dinosaur ever?

    Q: What was the largest dinosaur ever?

    A: Most paleontologists believe that the Argentinosaurus was the largest dinosaur to have ever lived. It may have been the largest land animal to have ever existed.
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  • What did dinosaurs eat?

    Q: What did dinosaurs eat?

    A: There is evidence that dinosaurs did not have a single, uniform and universal diet but rather a wide variety of dietary habits, with evidence supporting the idea that carnivorous, herbivorous and omnivorous species all existed. Different feeding styles were also likely, with some carnivorous species hunting prey such as mammals and small reptiles, while other carnivores may have been opportunistic carrion scavengers. There was likely even a good range of dietary variety amongst the herbivorous dinosaurs, which may have made up the majority of all dinosaur species.
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  • What is a baby dinosaur called?

    Q: What is a baby dinosaur called?

    A: Dinosaurs are hatched from eggs, therefore new baby dinosaurs are called hatchlings, just like their reptile cousins the turtles and crocodiles. Young dinosaurs, beyond the hatchling stage, are referred to as juveniles.
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  • Were dinosaurs warm-blooded or cold-blooded?

    Q: Were dinosaurs warm-blooded or cold-blooded?

    A: Because dinosaurs are classified as reptiles, one might assume that they are cold blooded, but some scientists suggest that dinosaurs may have been somewhere between cold and warm blooded. Though most animals fall into either category, there have been some intermediary species known to science, with dinosaurs potentially being one of this number.
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  • Could a dinosaur be cloned from DNA preserved in amber?

    Q: Could a dinosaur be cloned from DNA preserved in amber?

    A: It is theoretically possible, though highly unlikely, that a dinosaur clone could be created. The idea that it's possible to clone a dinosaur using DNA preserved in amber was popularized by the movie Jurassic Park. This fictionalized version of the process made it seem like a relatively easy process, but in truth it's rather complex and improbable.
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  • Why was the brontosaurus's name changed to the apatosaurus?

    Q: Why was the brontosaurus's name changed to the apatosaurus?

    A: The gigantic, herbivorous Brontosaurus, which features an iconically long neck and tail, may be one of history's most famous dinosaurs, but its existence as a unique species was debunked in 1903, when someone realized that the skeleton that had been labeled as a Brontosaurus was actually an Apatosaurus. In this sense, the Brontosaurus was not renamed but rather determined to have never existed as a separate species. The same man, a Yale paleontologist named Othniel Charles (O.C.) Marsh, named both the Apatosaurus and the Brontosaurus, with the Apatosaurus discovery predating the Brontosaurus naming by two years.
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  • What is Archaeopteryx claim to fame?

    Q: What is Archaeopteryx claim to fame?

    A: Many scientists agree that Archaeopteryx is the earliest known bird in existence, giving it a unique claim to fame as the first of its kind. This winged animal may well represent an evolutionary midpoint between birds and reptiles, providing potential proof that modern birds evolved from prehistoric, birdlike reptilian ancestors.
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  • What was the spinosaur's back fin used for?

    Q: What was the spinosaur's back fin used for?

    A: There seems to be a general lack of consensus among paleontologists as to what purpose the Spinosaurus' sail served; not only is there a lack of certainty as to why the sail existed, there also seems to be some question about whether the dinosaur actually had a sail at all. All questions about the Spinosaurus' anatomy must be answered using fossil evidence, which is limited to fossilized skeletal remains that show a crest of bones protruding upward from the dinosaur's spine. While some scientists feel that these bones provided the structure for a sail-like flap of skin, other argue that this spinal structure actually supported a large hump rather than a distinct sail.
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  • What do you do if you find a dinosaur bone?

    Q: What do you do if you find a dinosaur bone?

    A: Individuals who believe that they have found a fossilized dinosaur bone in an outdoor area should avoid touching it and instead take a photo and make note of its exact location using a map before making contact with a natural history museum such as the Smithsonian National Museum of Natural History in Washington, D.C. However, this procedure is not legally binding, particularly if the fossil is discovered on private land, though moral obligation may tell a different story. In the United States, individuals who find a fossil on their land are not required to report or hand it over to any authority.
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  • What does the word "dinosaur" mean?

    Q: What does the word "dinosaur" mean?

    A: The word "dinosaur" is derived from Greek words; it loosely translates as "terrible lizard" from the root words "deinos," meaning "terrible" or "fearfully great," and "sauros," meaning "lizard" or "reptile." Sir Richard Owen, the man who created this taxon, intended the word "terrible" to imply something awe-inspiring and magnificent rather than something scary and terrifying.
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  • Did the stegosaurus have two brains?

    Q: Did the stegosaurus have two brains?

    A: Even though there was a popular theory that Stegosaurus may have had two brains, one in its head and one toward its tail or rear end, that idea has largely been discredited in paleontology. Some paleontologists may still hold on to this theory and try to find ways that it might be true, but on the whole, this is not an accepted idea.
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  • What is the difference between a cast fossil and a mold fossil?

    Q: What is the difference between a cast fossil and a mold fossil?

    A: The difference between a mold fossil and a cast fossil is that mold fossil is formed when an object is placed into soft mud and is removed by decomposition or physical sources; a cast fossil happens when a mold fossil fills up with sediment. A cast fossil is three dimensional, and a mold must be present for the cast fossil to exist.
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  • What is the wingspan of a pterodactyl?

    Q: What is the wingspan of a pterodactyl?

    A: The wingspan of the largest species of pteranodon (the term employed by working paleontologists as opposed to the culturally popular term "pterodactyl") was up to 30 feet. This wingspan is much larger than that of any modern flying bird.
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  • How long ago did dinosaurs die out?

    Q: How long ago did dinosaurs die out?

    A: The purported mass dinosaur die off known as the K-Pg extinction event took place during the end of the Cretaceous Period (K) during the Mesozoic Era some 65 million years ago. This scientific theory is based on the study of the fossil record, which shows evidence for the existence of dinosaurs during the Mesozoic Era but not during the proceeding Cenozoic Era. There is a clear line of demarcation, an actual line found in sedimentary rock layers known as the K-Pg Boundary, with the majority of the fossilized remains found below this line belonging to the "Age of Dinosaurs" not appearing in the space above the line, which marks the beginning of the Paleogene Period (Pg), the Cenozoic Era and the "Age of Mammals."
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  • What did Tyrannosaurus rex eat?

    Q: What did Tyrannosaurus rex eat?

    A: Tyrannosaurus rex primarily ate herbivore dinosaurs, including the Edmontosaurus and the Triceratops. Studies suggest that the Tyrannosaurus rex also practiced cannibalism. Paleontologists believe that if two Tyrannosaurus rex dinosaurs fought to the death, the winner would eat the loser, based on bite marks found on Tyrannosaurus bones.
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  • When did dinosaurs become extinct?

    Q: When did dinosaurs become extinct?

    A: Dinosaurs became extinct about 65 million years ago. This extinction event occurred between the Cretaceous and Tertiary periods and wiped out about 50 percent of all other organisms then living on the planet.
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  • What were the smallest dinosaurs?

    Q: What were the smallest dinosaurs?

    A: The smallest known dinosaur species include the Minmi, Pakicetus, Europasaurus, Phosphatherium, Microraptor, Raptorex, Microceratops, Lariosaurus and Nemicolopterus. These are all examples of the smallest dinos in a particular group, such as the smallest Raptor (Microraptor), which weighed around 2 pounds and was small enough to eat insects, and the smallest Tyrannosaur (Raptorex), which likely topped out at about 150 pounds.
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  • Are there animals alive today that lived beside dinosaurs?

    Q: Are there animals alive today that lived beside dinosaurs?

    A: There are some animals on earth that can be traced back to the Mesozoic Era when dinosaurs walked the earth; these animals include monotremes such as the duckbill platypus, reptiles such as the crocodilians and sea creatures such as the sea urchin. For the most part, the animals that are alive today have made evolutionary changes from the forms they had when dinosaurs were alive. For example, though the event that caused dinosaurs to die out also killed many other reptile species, several surviving reptile species have direct ancestors from that era, including the crocodilians, which are smaller than their Mesozoic ancestors.
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  • When did the velociraptor become extinct?

    Q: When did the velociraptor become extinct?

    A: The velociraptor became extinct at the end of the Cretaceous Period due to an asteroid strike at the Yucatan Peninsula that occurred roughly 65 million years ago. This extinction event, known as the K-T boundary, also killed all other known species of non-avian dinosaurs.
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