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|What does the word dinosaur mean?
What does saurus mean?,
What does deinos mean?
What color were the dinosaurs?
How (and when) did the dinosaurs go extinct?
|How many dinosaurs were there?|
|What was the biggest dinosaur?||What was the smallest dinosaur?||Which dinosaur was the largest meat-eater?||Were there more plant-eaters or meat-eaters?|
|How many teeth did T. rex have (and how big were they)?||What is the oldest dinosaur ever found?||What was the first dinosaur ever found?||
Did birds evolve from the dinosaurs?
Were there any flying dinosaurs?
Were there any swimming dinosaurs?
|How do you know what the enemies of a dinosaur were?||What kind of habitats did the dinosaurs live in?|
A: There were many different types of saber-tooth cats. They varied in size; Smilodon was the biggest - it was about the size of a modern-day lion. It's long incisors were up to 7 inches (18 cm) long. For more information on Smilodon, click here.
A: There are about 1,000 known genera (this probably represents only a a fraction of the genera that existed).
A: T. rex was named in 1905 by the paleontologist Henry Fairfield Osborn. For more informationon T. rex, click here.
A: Many live on Komodo Island. For a page on Komodo dragons, click here.
A: ornitholestes means "bird robber." For more information on Ornitholestes, click here.
A: You can see fossilized trackways of the dinosaur called Eubrontes at Dinosaur State Park, 400 West Street , Rocky Hill, CT. Park.
A: For information on Hypselosaurus, cick here.
A: Click here.
Ammonites were early mollusks that are now extinct.
A: Click here.
A: About 200 or so.
A: Yes, Achillobator was probably a dromaeosaur (informally called raptors), but there may be fossils belonging to two dinosaurs at the site where Achillobator was found in Mongolia (that might explain why the skull and pelvis were so similar to that of a carnosaur, but the toes were like those of a dromaeosaur).
A: Click here for some information on Horner.
A: I dno't know the exact number of Parasaurolophus fossils that have been found, but both adults and at least one juvenile have been found.
I'm not sure what else I can say about my drawings (beyond what I answered on Friday).
A: Holocene means "entirely recent" in Greek.
A: Barosaurus was about 66 to 88 feet (20-27 m) long and weighed roughly 44 tons (40000 kg). For a page on Barosaurus, click here.
A: It depends on what you find interesting. Iguanodon had strange, conical thumb spikes. It also had teeth similar to those of the iguana. For more information on Iguanodon, click here.
A: It's about 20 miles west of Choteau, Montana.
A: Monoclonius may have weighed about 4780 pounds (2170 kg). For more information on Monoclonius, click here.
A: Ornitholestes fossils have been found in Wyoming and Utah, USA. For more information on Ornitholestes, click here.
A: Fossils are usually found in sedimentary rock.
A: The blue whale.
A: Dimetrodon probably used its sail to regulate its body temperature. For more information, click here.
A: For a page on Hypsilophodon, click here.
A: For a page on how fossils form, click here.
A: Scientists think that Megalodon looked like a streamlined version of the great white shark.
A: Dinosaurs lived during the Mesozoic Era, from about 230 million years ago until 65 million years ago.
A: Theropods were the meat-eating dinosaurs, like T. rex, Allosaurus, Albertosaurus, Velociraptor, and Spinosaurus.
A: The flying reptiles that lived during the time of the dinosaurs were called pterosaurs.
A: No one knows why the some dinosaurs got to be so big.
A: Mamenchisaurus' size was probably its best protection. It also had claws on its toes and a long tail that may have been used for protection.
A: Velociraptor may have been able to run up to roughly 40 mph (60 km/hr) for short bursts.
If that were known, it would tell you a lot about their behavior, how much they needed to eat, how active they were, what climates they could survive in, and other information.
A: Using Aldus Superpaint.
A: Click here for a page on dating fossils.
A: Megaraptor lived during the late Cretaceous period, about 90-84 million years ago. Giganotosaurus lived about 95 million years ago.
A: There were many different plesiosaurs. For some information on them, click here.
A: Click here for more information on Brontosaurus (now called Apatosaurus).
Not since the Mesozoic Era.
A: For this and other information on the woolly mammoth, click here.
A: Heterodontosaurus belonged to the suborder Ornithopoda (ornithopods). For more information on Heterodontosaurus, click here.
A: I wasn't aware that any Hyracotherium (also known as Eohipppus) fur had been found. An animal's coloration often changes as its habitat changes.
A: Champsosaurus wasn't a dinosaur - it was another type of reptile. For information on Champsosaurus, click here.
A: Pteranodon fossils have been found in the USA (in Kansas) and in England. For more information on Pteranodon, click here.
A: Tyrannosaurus rex was not named after any particular king. Rex simply means king in Latin.
A: Apatosaurus (which used to be known as Brontosaurus) belonged to the:
I have no idea what you mean.
A: For a page on what dinosaurs ate, click here.
Click here and scroll down towards the bottom of the page.
A: Ichthyosaurus primarily, but Mary Anning found many important fossils.
A: Sedimentary rocks are found all around the world. Some sedimentary rocks include sandstone, limestone, and shale. A lot of sedimentary rock is buried, but there are exposed
sedimentary rock outcroppings like cliffs, river banks, road cuts, quarries, and desert badlands.
A: Dyslocosaurus lived during the late Jurassic period.
A: For a page on Pangaea, click here.
A: It depends on the condition and size of the bones, but generally fossils are encased in plaster (to protect them during transport) and carefully crated from the field to a lab.
A: Stegosaurus had solid bones.
A: Pachycephalosaurus may have used its thick skull to butt other animals, but this theory is in debate. For more information on Pachycephalosaurus, click here.
A: For a page on dinosaur reproduction, click here.
A: Click here.
A: I've never seen an estimate of Triceratops' life span. For the other information on Triceratops, click here.
A: First find the volume of the model. The easiest way is probably to measure how much water it displaces. For example, if you start with a large measuring cup that contains 1 liter of water of water, then put the entire dinosaur model in it, the water level will be higher. The difference in the last number and the beginning number (1 liter in this case) gives you the volume of the scale model.
Next, you have to determine what the density of your real dinosaur might have been (density has units of weight per volume) - this is the trickiest part and one you must be prepared to justify. The best way to estimate this is to find a modern day animal with similar anatomy (making sure they have the same type of bone structure [hollow or solid], horns, armor, etc.). Also make sure your units are in the same system (metric or otherwise) as the volume measurement.
Multiply the scaled dino's volume times your estimated density to get the weight of a tiny version of the real dinosaur.
Then multiply the weight of the little dinosaur by the scale factor cubed (40 times 40 times 40 in your case) to get the weight of the large critter.
A: Greek. For a page on dinosaur name etymology (word origins), click here.
A: I have no idea what your question is. I receive hundreds of questions each day and answer as many as I can. I usually answer the ones I find the most interesting and the ones I know the answers to (oddly enough) - I do not save the old questions. By the way, I started this page at the request of a first grade teacher who wanted to have a place where her students could ask dinosaur questions.
There are pages on Cretaceous dinosaurs and pages on South American dinosaurs. When you're on those pages, find the dinosaur(s) you're interested - if we have a page on that dinosaur(s) their name will be a link to a page on that dinosaur.
It was warmer than it is now and the seasonality was not as strong (the difference between summer and winter was not at all as extreme. For more information on the Mesozoic Era (the time when the dinosaurs lived), click here.
A: Only some of the dinosaurs were huge. They ranged in size from enormous to the size of chickens. No one knows why the big ones were so big.
A: There were a lot of different types od plesiosaurs. They lived lived during the Mesozoic Era, from the early Jurassic period (about 200 million years ago) to the end of the Cretaceous period (about 65 million years ago). For more information on plesiosaurs, click here.
A: Click here for a page on mammoths.
A: No dinosaur fossils have been found anywhere in the state of Washington. For a list of dinosaur fossils found state by state, click here.For a list of all known dinosaur genera, click here.
A: That theory isn't really taken very seriously. For example, it doesn't explain why so many other other organisms (including many plants and marine organisms) went extinct. For a page on alternate dinosaur extinction theories, click here.
A: For a list of all known dinosaur genera, click here.
Dinichthys (also called Dunkleosteus) wasn't a dinosaur - it was an ancient, armored fish. It was up to 11.5 ft (3.5 m) long; I don't have an estimate of its weight.
A: Click here.
A: Troodon means "wounding tooth."
A: For a page on Corythosaurus, click here.
A: For a page on dinosaur life spans, click here.
A: Some plant-eaters had gastrolths, stones that they swallowed (the stones remained in the stomach area, and helped grind up food). Some, like Ankylosaurus, may have also fermented their food.
A: Ankylosaurus means "fused lizard" Oviraptor means "egg robber," but it was misnamed. I'm not sure what you're asking about the Pterosaurs (flying lizards that lived during the Mesozoic Era).
A: For a page on ammonites, click here.
I don't know about "ruled" - perhaps "mowed" would be more descriptive. Barosaurus lived during the Jurassic period, about 156 to 145 million years ago. For more information on Barosuarus, click here.
A: Dinosaurs first appeared during the Triassic period, about 230 million years ago.
For a page on Komodo dragons, click here.
A: Try this link.
A: Click here for information on Parasaurolophus.
A: There were many more herbivores (plant-eaters) than carnivores (meat-eaters). For information on dinosaur diets, click here.
A: Yes, Triceratops bone fragments have been found in fossilized T. rex dung. It probably could not kill the larger sauropods, like Alamosaurus.
A: Stegosaurus belongs to the family Stegosaurinae.
A: Pachycephalosaurus lived during the late Cretaceous period, about 76 to 65 million years ago. For other dinosaurs that lived during this time, click here. Look for dinosaurs in red (meat-eaters) who lived in the same area as Pachycephalosaurus (Western North America). I doubt it could hurt an adult T. rex very much. No one knows if they cared for their young, but they may have.
A: Compsognathus was a chicken-sized carnivore (meat-eater). It probably ate insects, small lizards (like Bavarisaurus), and other small animals. For more information on Compsognathus, click here.
A: Millions of years, geography, climate, sea level, and the organisms that existed. For information on these periods, click here.
Reptile means "to creep" in Latin. For pterosaurs (flying reptiles), click here. An omnivore eats both plants and meat (humans are onmivores). The asteroids (65 million years ago) hit off the Yucatan Peninsula and in the Indian Ocean (and perhaps other locations yet uknown).
A: Thanks. No, Troodon couldn't kill a T. rex.
A: Rex means "king' in Latin. For more information on T. rex, click here.
A: Anatotitan, Camptosaurus, Denversaurus, Edmontosaurus, Hoplitosaurus, Iguanodon, Nanotyrannus, Pachycephalosaurus, Thescelosaurus, Thespesius, Torosaurus, Triceratops prorsus, and Tyrannosaurus have been found in South Dakota.
For a list of dinosaurs found state by state in the USA, click here.
A: No one knows the answers to either of these questions.
A: During the Mesozoic Era from about 230 to 65 million years ago.
A: None that I've heard of. For a list of dinosaurs found state by state in the USA, click here.
T. rex had a bigger brain than Triceratops relative to its body weight.
A: No, Dimertrodon was a pelycosaur. The pelycosaurs lived during the Permian period, before the dinosaurs evolved. They also had a very different skull structure than the dinosaurs and sprawling legs (unlike the dinosaurs' columnar legs). The pelycosaurs are sometimes called mammal-like reptiles, since their lineage led to the evolution of the mammals. For more information on Dimetrodon, click here.
The Archeozoic Eon (also called the Archean) lasted from 3.9 to 2.5 billion years ago. During this time, the first life forms evolved - these were one celled organisms. Blue-green algae, archaeans, and bacteria appeared in the sea. This began to put oxygen into the atmosphere. For a chart of geologic time, click here.
A: Acrocanthosaurus, Alamosaurus, Brontopodus, Camptosaurus, Chasmosaurus, Coelophysis, Deinonychus, Dimetrodon*, Edmontosaurus, Hypsilophodon, Iguanodon, Kritosaurus, Megatherium* (giant ground sloth), Ornithomimus, Panoplosaurus, Pawpawsaurus, Pleurocoelus, Protohadros byrdi, Quetzalcoatlus*, Shuvosaurus, Stegoceras, Technosaurus, Tenontosaurus, Texascetes, Torosaurus, and Tyrannosaurus rex were found in Texas. For a list of dinosaurs found state by state in the USA, click here.
T. rex weighed roughly 5 to 7 tons. For more information on T. rex, click here.
A: Therizinosaurus was a meat-eater.
A: Two dinosaurs that were herbivores (plant-eaters) were Brachiosaurus and Triceratops.
A: There were lots of different saber-tooth cats; they lived during the Pleistocene Epoch (the early
part of the Quaternary Period). During this time, the Earth was much colder than it was now and sea-levels were lower (much of the sea water was frozen). Ice sheets and glaciers covered much of the land. Saber-tooth cats lived in grasslands, shrubby areas and pine forests that supported the plant-eating animals that the saber-tooth cats ate. For more information on saber-tooth cats, click here.
For information on Stegosaurus, click here.
A: The Triassic period lasted from 248 - 206 million years ago. It was the earliest period in the Mesozoic Era. For a page of Triassic period dinosaurs, click here. During this time, the weather was warmer, the sea levels were higher (because there was no polar ice), the Earth's continents were jammed into one supercontinent called Pangaea, and much of the land of Earth was inland and desert-like.
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