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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?|
Click here for other dinosuars that lived during the late Jurassic period with Stegosaurus.
A: Yes, there have been many fossils found in Kansas, including mosasaurs, plesiosaurs, and many others.
A: Lystrosaurus means "shovel lizard." Estemmenosuchus means "crowned crocodile."
Stegosaurus lived dirong the late Jurassic period, from about 156-140 million years ago.
A: Click here for a page on the red-eyed tree frog.
The first land animals were amphibians from the Devonian Period.
There were many different types of plant-eating dinosaurs during the Jurassic and they ate different plants. For example, Brachiosaurus probably ate leaves from high in the trees, but Stegosaurus probably ate low-lying plants.
A: No one knows exactly, but the plant-eaters probably spent most of their time eating.
A: There were many more plant-eaters. For more information on dinosaur diets, click here.
The Earth goes through periodic changes in temperature, but no one knows the exact cause(s). The temperature changes may be due to changes in the Sun, or to changes in the Earth's atmosphere (from changes in volcanic activity or other large-scale phenomena).
A: Different types of dinosaurs went extinct throughout the Mesozoic Era. The last of the dinosaurs went extinct in the K-T extinction at the end of the Cretaceous period, about 65 million years ago.
Dinosaurs were reptiles but not lizards.
For all the one I know of, click here.
A: Click here for a page on Cretaceous period plants.
A: For information on Komodo dragons, click here.
A: Click here.
I haven't counted them, but click here for a list of them.
A: Mammoths had longer tusks than mastodons, a wider head, a sloping back, flat, chewing teeth, a trunk with
two finger-like projections, and were mostly taller. Mastodons evolved earlier and lasted longer in geologic time.
A: Dinosaur fossils have been found all over the world (on each of the continents), usually in sedimentary rock.
Troodon hatched from eggs. Elongated Troodon eggs in nests have been found in Montana, USA.
A: Dimetrodon means "two measures tooth." It lived in swampy areas during the Permian period (fossils have been found in Texas and Oklahoma). For more information on Dimetrodon, click here.
A: They look at a lot of clues, including the sea level at that time (when the climate is hot, the polar ice melts and the sea level rises), the type of plants that lived (for example, if you see tropical-type plants at temperate latitudes, it was warmer than it is now; if you see succulents, it was a dry area), etc.
Allosaurus had sharp teeth in its powerful jaws and sharp claws on its feet and hands.
Click here for Mesozoic Era plants.
DIfferent dinosaurs lived in different habitats, ranging from deserts to forests to swampy areas. For a page on dinosaur diets (which also differed greatly), click here.
A: T. rex was a meat-eater (a carnivore) that ate large animals, like the plant-eating dinosaur Triceratops. For more information on T. rex's diet, click here.
A: Click here.
A: Coelophysis lived during the late Triassic period, roughly 210 million years ago. For more information on Coelophysis, click here.
A: Euoplocephalus was a type of ankylosaur. Euoplocephalus (about 20 feet long) was slightly smaller than Ankylosaurus (25-30 feet long).
A: There are about 1000 known genera (and there were many more species).
A: All the dinosaurs lived in the wild. To survive, Maiasaura had to eat (it was a plant eater), avoid injury, and escape from or avoid predators (meat-eaters).
A: Only one fossilized dinosaur hear has been found (from Thescelosaurus, an ornithischian dinosaur). I haven't heard of any saurischian dinosaur hearts being found.
It is thought that most dinosaurs held their tail above the ground because although many fossilized footprints have been found, very few fossilized tail tracks have been found with them.
A: Only the birds are thought to have evolved from dinosaurs (but not necessarily from Cretaceous period dinosaurs). Perhaps you could list various types of birds.
A: Apatosaurus was called Apatosaurus, which means "deceptive lizard," because its fosisls were so similar to those of other sauropods. It was named in 1877 by US paleontologist Othniel C. Marsh.
A: Yes, Apatosaurus died out many millions of years before T. rex evolved. Apatosaurus lived from 57-146 million years ago; T. rex lived from 85 to 65 million years ago.
For a page on Brachiosaurus, click here.
Pteranodon fossils have been found in the USA (in Kansas) and in England.
For information on Albertosaurus, click here. I've never seen an estimate of the life span of this meat-eater.
A: The earliest-known dinosaurs lived about 230 million years ago, during the Triassic period.
The period is the basic unit of geological time in which a single type of rock system is formed; periods last tens of millions of years. The period changes when a major geological event occurs (like tremendous volcanic activity or a huge asteroid impact). The Jurassic period (208-146 million years ago) began after a minor mass extinction occurred at the end of the Triassic period (probably caused by global cooling resulting from an asteroid impact). The continent of Pangaea began drifting apart during the beginning of the Jurassic. The Jurassic ended with a minor mass extinction (the cause of which is unknown).
A: Brachiosaurus lived from 156 million to 145 million years during the Jurassic period (the middle part of the Mesozoic Era).
A: See the page on Dimetrodon.
A: Click here.
A: No, it's the other way around.
A: Click here.
A: Click here.
A: The last remaining dinosaurs died 65 million years ago during the K-T extinction, but most dinosaur species went extinct at various times throughout the Mesozoic Era.
A: Old sedimentary rocks.
A: A few dinosaurs did, including Ouranosaurus, Spinosaurus, Acrocanthosaurus, and others.
The earliest mammals date from the Triassic period. The earliest bird (Archaeopteryx) dates from the Jurassic period.
A: Click here for a page on Baryonyx. Also, click on the links on that page for in-depth information on related topics (like what is was like when it lived, and what dinosaurs it is related to).
A: Fossilized feces (poop) is called coprolites. Paleontolosts do study coprolites to learn about dinosaur (and other extinct animal) diets. For example, T. rex coprolites were found containing bits of crushed Triceratops frill bone.
A: For a page on Arhcelon, click here
For a page on Iguanodon, click here (but the color of Iguanodon, like all dinosaurs, is not known).
A: Click here.
T. rex died during the K-T extinction, which may have been caused by a huge asteroid impact that changed the Earth's climate.
During the time of the dinosaurs, the weather was warmer than it is now. Because of this, there was no polar ice and the sea level was higher than it is now, and low-lying places, like Florida, were underwater.
A: Click here.
A: Iguanodon was the first dinosaur genus found (but was not the first one the be named). The first dinosaur to be named (and scientifically described) was Megalosaurus bucklandii. For more information on this and other early dinosaur discoveries, click here.
A: Fragmentary ankylosaur, carnosaur, and sauropod fossils have been found in New Zealand (by Joan Wiffen, an amateur paleontologist who pioneered dinosaur hunting in New Zealand).
A: Diplodocus means "double beamed." For more information on Diplodocus, click here.
A: For a page on dating dinosaur bones, click here.
A: Komodo dragons live on Komodo Island and other nearby islands in Indonesia. For more information on Komodo dragons, click here.
A: It means "fish lizard." For more information on Ichthyosaurs, click here.
A: No, dinosaurs went extinct millions of years before people evolved. Only tiny, almost rat-like mammals were alive during the time of the dinosaurs.
The ones who walked on two legs (bipeds) were theropods (the meat-eaters). There were many different dinosaurs who walked on four legs (quadrupeds), including the sauropods and some ornithischians.
A: As you mentioned, during the Triassic period, all the continents were jammed together into one supercontinent called Pangaea. This made most of the interior dry and deserty. The weather was warmer than it is now and there was no polar ice, so sea levels were higer than they are now. Another major difference is the lack of flowering plants (including grasses) during the Triassic.
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