Dinosaurs

The collective noun for a group of dinosaurs would be a 'herd' or a 'pack'.

A troodon....

Btw, the previous person who wrote an answer to this questions, i have something to say to you. If you don't know the answer, don't guess. Or reply with something more stupid.... which is what you did...

Stegosaurus had 17 bony plates that were embedded in its back. The plates ran along the Stegosaurus' back and tail in two rows, and the plates alternated in alignment. The largest of these triangular plates was about 2.5 ft tall and just as long. Stegosaurus also had spikes at the end of its flexible tail.

There isn't one, as all reptiles have backbones.

It could but only Dinosaurs like routops and oranasaurus

The fossils look like egg-shaped rocks. They're basically the same as chicken eggs, just different sizes.
No one knows as dinosaurs are prehistoric animals, and the only proof of their existence are the few, rare bone fossils that have been found by archaeologists. So no one will never really know how the inside of a dinosaur egg will look like because it would have probably rotted away over the billions of years.

Elasmosaurus was a plesiosaur. All plesiosaurs became extinct 65.5 million years ago or before, and that was millions of years before people. Because fossils don't preserve colors, nobody knows what color the Elasmosaurus was.

THE one and only WOOLLY MAMMOTH it has long fur that can be almost smelt by a human, it has two sharp tusks that are seen to be curved about 5m long or 16ft , also are very tall, also lastly scientist are actually very close to the close discovery of remaking a woolly mammoth.

It is difficult to know how long dinosaurs have lived. However it seems that the smaller the animal is the shorter the lifespan is. So it could be that a dinosaur like a Hypsilophodon might only live to about 20 years, but this is guess work by what I have read. A Velociraptor is also a small dinosaur approximately 6 feet long so they are about the same size as the Hypsilophodon, and the web-page below was guess that a velociraptor might live to 20 years. Reference: http:/dinosaurs.about.com/od/dinosaurbasics/a/lifespans.htm

The "-saur" part does refer to lizards, but the creatures were rather misnamed. In most respects, they were not very lizard-like, but hard more in common with birds.

There was an effort a few years back to refer to them as "Archisaurs," a category meant to include birds and crocodiles and EXCLUDE skinks and iguanas and varanids, but I haven't heard much of it lately.

Most obvious difference: lizard legs sprawl out to the sides, like turtle legs; dinosaur legs are directly under the body weight like birds, elephants, dogs and people.

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''Sauria'' is a Greek word that means, as noted above, ''lizard''. When dinosaur fossils were first discovered, biologist Richard Owen coined the term Dinosaur, meaning terrible lizard. He knew that the fossils were not those of mammals and that they resembled reptiles more closely than anything else, hence the name.

The term ''Archosauria'' applies to a bona fide Clade and is still in use today. It refers to a group of diapsid amniotes whose living representatives are the birds and crocodilians. It also includes many extinct reptiles such as pterosaurs, some long-gone relatives of crocodilians, and the non-avian dinosaurs.

Einiosaurus was a midsized Ceratopsian, meaning it was a quadruped with an armored frill coming off the back of it's head which protected the neck. This particular one had a nasal horn which curved quite strongly forward, resembling a bottle opener. As such, this animal was an herbivore, grazing on pretty much any low growing plant life it came across with its horny beak and strong grinding teeth. It was likely on the move almost constantly, spending a great deal of its time grazing to keep the mass of its body with enough energy to carry it's weight around.

about the same size as a ostirch

Brontosaurus was a useless name given to Apatosaurus. When that was found out, scientists stopped using it, but it still was popular with the general public. There is also a type of Apatosaurus called Eobrontosaurus.

Yes, In fact, experts believe that Dinosaurs are more closely related to Birds than modern-day reptiles. Before Dinosaurs died out, some evolved into Birds. When the disaster struck that wiped out the Dinosaurs, the Birds survived. You can see how closely related Dinosaurs and Birds are by comparing a Compsognathus (small Dinosaur) skeleton to an Archaeopteryx (early prehistoric bird) skeleton, and you will notice that they are very similar.

Scientists can learn many things. They can learn how large a dinosaur was, what it looked like, what it ate, and how it moved, to name a few things.

History is usually considered to be restricted to the period of time where mankind was able to write down and record events. History is the study of these records.

If one hoes back to a time where no records are available (because they have been lost or before writing was invented, then one relies on other (superposition and radio isotope) dating and the discipline is called "Archeology.

As one goes back further before the first people made objects that can be found one enters the field of "Geology" which studies the evolution of life and the formation of the planet Earth.

Going back still further, before Earth formed, the discipline is called "Cosmology".

The Tyrannosaurus Rex was a hunter that didn't need any shelter. This animal hunted alone or with a mate. He builds a nest of branches, logs and sand in a pile. Himself he didn't need it, he was lying around somewhere. Tyrannosaurus, any other dinosaur, didn't need shelter, because the open sky was shelter enough. They were adjusted to their environment.

A prhistoric dolfin named Angie romed earth eating only snail remains

this dolfin likely is fosselised in the heart of the sea.

other wise knon as the pasific Angie

They are BILLIONS years of age

"There is very little DNA left in fossils, that are more than 100,000 years old", said Michael Hofreiter, a geneticist at the university of York in UK. "It is fragmented and there is a lot of contamination from other organisms, including bacteria, fungi and usually humans."

well, supposedly this big asteroid hit the earth and caused all this dust to go up into the atmosphere cover the sun so we had no sunlight and they all froze to death or starved. they also think a couple of species in the ocean survived.

Brontosaurus is actually an invalid name for Apatosaurus excelsus. Apatosaurus was 15 feet tall to the highest point on its back, or about two and a half times as tall as an average American man. They were 75 feet long, or as long as twelve and a half men laying in a line. Apatosaurus weighed between 18 and 25 tons, or as much as 225 to 312 healthy 6 foot tall men.

study of fossils and dinosaurs