Dinosaurs

With the extinction of dinosaurs and many other large reptiles, a wide variety of niches were left open. These were quickly filled by adaptable mammals, leading to the mammal dominated fauna of today.

While pterosaurs, the flying reptiles that lived during the Age of Dinosaurs, were not dinosaurs, paleontologists now classify modern birds as dinosaurs. There was also the relatively recent discovery of microraptor, a small feathered relative of velociraptor that may have had a limited flight capability.

they share some of the same matter.

There are a few theories. The most popular one is they stood in sunlight to keep warm, just like modern crocodiles (and other reptiles). Another theory that is not very popular is that they were warm blooded... which is just an amazing idea!

That's the leading theory based on tons of evidence from the fields of geology, archeology, paleontology, and evidence from ice plugs taken in the arctic and antarctic. There are two candidate sites for where the meteor hit: some take Iceland as where it hit, but most scientists think that the meteor struck what is now off the coast of the Yucatan Peninsula. For a more detailed discussion, go to the library and check out a book on this theory. (Remember: A theory in technical use is a more or less verified or established explanation accounting for known facts or phenomena: the theory of relativity.)

No, Pachycephalosaurus was a plant-eating dinosaur.

approximately a billion hindus are alive today. They mainly reside in India, nepal, Myanmar and mauritius.

None. The first dinosaurs did not evolve until around 230 million years ago. The first reptiles appeared just before 300 million years ago. These animals would have looked rather like lizards though they are not represented by any modern group of animals.

Dilophosaurus lived at a time when North America's climate was mostly arid to semi-arid, similar to Africa and Australia today. The dominant flora of the time consisted of conifers, ferns, ginkgoes, cycads, and tree-ferns with no flowering plants like grass.

I don't think man would've had the opportunity to evolve safely. Had there been such super-predators, I don't we would've been able to make such big societal jumps as needed ... or at a minimum, they would've taken much longer to occur.

Nothing now that they are extinct. However when they lived they only ate plant life.

It is a popular BELIEF that a meteorite killed the dinosaurs. There is no hard evidence to support it, and as such, your guess is as good as anyone elses.

There are several craters on the planet large enough to support the theory, but the evidence is considerably lacking past that.

Another popular theory is that they simply died out through the process of self extinction. They consumed all available resources, died out slowly, and eventually went extinct.

Kronosaurus, a type of pliosaur (carnivorous marine reptile related to plesiosaurs but with a short neck). It died out about 99 million years ago, during the Cenomanian stage of the upper Cretaceous period, the third and final period of the Mesozoic era.

No. Plesiosaurs were marine reptiles, not dinosaurs. Saurichians were one of the two main groups of dinosaurs (which included sauropods - such as Apatosaurus - and theropods - such as T. rex).

There was absolutely no life on land before the dinosaurs. Every living creature was in the sea before dinosaurs roamed the Earth.

All dinosaurs are related to birds. The exact branch of dinosaurs that birds come from is difficult to determine, but it is belived that they belong to a group called maniraptorans, which include velociraptor, troodon, and archaeopteryx.

Ornitholestes would probably flee from a predator if it could. However, it could have fought if it had to using its teeth and claws.

Turtle? Tortoises

Tyrannosaurus - name meaning tyrant lizard

Pterosaurs lived in the late Jurassic Period throughout the end of the Cretaceous Period. They lived in coastal areas where there would be salt water and where they could find fish.They could have been found in America, Africa, Japan, China, Guam, and Germany.

No. In fact, humans evolved about 65 million years after all the dinosaurs died out. When the dinosaurs became extinct, mammals were given room to expand and diversify so that humans could eventually arise. During dinosaur times, mammals were forced to remain small and insignificant.

Because humans and dinosaurs never met.

Dinosaurs died out 65 million years ago. The human race is only 200,000 years old.

The troodont Mei. Add its species name, and you get the full scientific name of Mei long, one of the shortest of any animal.

You're probably talking about the Maiasaura, which means "good mother lizard." It was a herbivore and lived in the late Cretaceous, in North America. It was both quadropedal and bipedal and lived in large herds. The Maiasaura most likely got it's name because it was the first proof of dinosaurs caring for their young, as evidence shows worn teeth from hatchlings, indicating that the parents brought food for it until it was able to leave the nest.