Dinosaurs

Giganotosaurus weighed an incredible 9 tons(18,000 pounds)

Alligators and crocodiles would be considered cousins of the dinosaurs. Birds, by contrast, are more than just cousins of dinosaurs but are not classified as the only surviving dinosaurs.

Unfortunately, I have never heard of a 'dinour'. If you mean to say 'dinosaur', considering this question is in the Dinosaurs category, then yes, they did exist (if that is what you mean as well--exsisit is not a word). Many different types of fossils have been found. Sixty-five million years ago, they became extinct from a meteor impact.

Velociraptor? Typically, predators are smarter than their prey. They have to be. Their food tends to fight or run away from them, whereas it doesn't take that much brainpower to sneak up on a turnip or to overpower it.

Not likely, while it could be a plausible explanation if it had just been the dinosaurs that went extinct it could work. However, the event that killed off the dinosaurs also killed of a variety of other organisms both on land and in the ocean, where mammals had not yet established themselves.

A hypothesis that explains the extinction of the dinosaurs, but not the other life forms that died out in the same event, is incomplete.

An early Jurasic dinosaur

yes the first dinos appeared 230mya during the late triassic period

Paleontologists can tell if they are either running or walking by the way it is placed. if it is, in a sort of way, "smudged" or "misshapened", it is likely it was running for some reason. They can also tell the size of the dinosaur by comparing it with other discoveries of these beasts.

No. Dinosaurs and alligators (crocodilians) are two separate groups of archosaurs. They are related but dinosaurs are not "advanced" alligators. And evolutionarily it makes no sense to say an animal "just developed."

Although teeth are very strong, a tooth is only a fossil if it has gone through theprocessof fossilization. A tooth is considered a petrified fossil because minerals have made it into a rock, thusallowingit to survive the millions of years.

Tiny.

Brachiosaurus did not have prey. It was an herbivore, meaning it only ate plants.

Dinosaurs first evolved 231.4 million years ago in Pangaea. This was during the beginning of the Mesozoic era, in the Triassic period.

Because most animals now were just cells at the time, or water animals and have eventually evolved into what we have today.

They were also reptilians i.e coldblooded, and needed the sun for warmth and energy. Hence the asteroid struck and no sun for hundreds of years due to all the dust in the atmosphere. no more dinosaurs.

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The survivors were animals that could cope with the world-wide climate-change that killed off most of the dinosaurs. These were largely fish, insects, mammals, enough reptiles to keep the family going, and early forms of the birds. The birds evolved from certain dinosaur lines.

There is a theory that the asteroid impact's effects were augmented by those of contemporary, very large-scale volcanism, particularly that which formed the Deccan Trappes along the W coast of India.

it is impossible to say no to that question. if you say there are no animals we dont know about, you cant prove it. maybe no one has ever seen one before, therefore you dont know if its there or not

In the Late Permian, a volcanic region in India called the Deccan Traps formed, pumping large amounts of gases into Earth's atmosphere. These created a greenhouse effect, raising global temperatures. This is known as the End Permian Extinction.

By the Permian-Triassic boundary, 250 million years ago, vast deserts covered the planet. Over 90 percent of all animal species on Earth had died out.

It is rumored that cavemen died from starvation. There is no proof of this and a lot of people choose to believe cavemen died from being eaten by dinosaurs.

We can only speculate one what color deinonychus was. We do know that deinonychus had feathers from preserved feathers in close relatives of deinonychus and from quill knobs found in young deinonychus specimens. The feathers on the arms and the end of the tail were probably large and well structured, giving the dinosaur a very birdlike appearance. It would have stood a little over three feet tall and measured about ten feet long from the nose to the end of the tail. One of the most notable features of deinonychus were the claws on its feet. Each foot bore four toes: two contacted the ground and acted as normal toes, one remained as a dewclaw, and the inner toe bore a sickle-shaped claw that it kept raised above the ground. This earned deinonychus its name, which means "terrible claw." The link below shows and artist's interpretation of what deinonychus may have looked like. Note that the colors are speculation.

No.

Crocodiles are dinosaurs technically.

But if your after T-Rex and stuff, then yeah.

Yes. This is mainly due to the sudden increase of vegetation during the Jurassic as well as the fact that the vegetation was getting much abundant, with more vegetation comes more oxygen. this sudden increase of vegetation allows herbivores of that time to grow in size (Eg. Protosauropods from the Triassic to Sauropods like Diplodicus and Brachiosaur in the Jurassic). With larger Herbivores comes in larger carnivores, the once abundant Ceratosaurus has been reduced due to competition with larger and more advance carnivore like Allosaurus. So yes Jurassic dinosaurs were indeed bigger and ADVANCE due to larger vegetation and increase in oxygen.

The procedure about dinosaurs is to understanding bone.

First of al Quetzalcoatlus was a pterosaur, not a dinosaur. And yes it was a predator that probably fed primarily on fish.

No and yes. Some people live in caves but have real clothing. Those are homeless though. (So sad) And no because Actual cavemen evolved into modern people like us. No real, actual cavemen but people who live in caves. (As I said so sad)

Yes. They are parts from natural creatures.