Dinosaurs

Some are it depends on what kind of dinosaur.

It means "terrible" (deinos) "lizard" (sauros). Unfortunately, when they were named - by a fellow named Richard Owen - people sort of wanted them to be like lizards, but in fact, they were a lot more like birds.

i think it was 13 years to 17 years old

Dinosaurs as most people think of them are completely extinct. However, birds evolved from dinosaurs, and as such, are considered to be a group of dinosaurs. Since birds are still alive today, so are some dinosaurs. No dinosaurs other than birds are alive today, though.

Albertosaurus were the largest carnivores where they lived, so their only enemies were other Albertosaurus. They would have fought by biting. Some tyrannosaur specimens are found with such bite marks on their heads, so they probably bit each other on the head during fights, as well as other areas.

Stegosaurus lived between 155 and 150 million years ago. By that point, the continents had broken apart, and the seas created barriers to land animals. Thus, Stegosaurus never spread to all the continents. Stegosaurus fossils are known from North America, and its relatives, the stegosaurs, have been found in North America, Europe, Asia, and Africa.

yes! Scientists are currently trying to as well. Scientists have been able to reverse stuff in the embryos of birds, which gave those birds features that were the same as dinosaurs. Eventually, we will see some dinosaurs :D

Yes, the Iguanodon was an herbivorous dinosaur. They ate contemporary plants such as conifers and ferns. To reach higher foliage, they could have stood on their hind legs.

trio time: 1 st period for next 2. - jurrasic and cretaceous

No. Dinosaurs existed in the Mesozoic era and became extinct in the last period of Mesozoic era ie. in Cretaceous period. However horse evolution started in the first period of the next era ie. Cenozoic. So, no poor dinosaurs didn't get to see any horses :p

Cryolophosaurus was 26 feet long The name Cryolophosaurus was derived from the Greek kryos (meaning "cold" or "frozen"), lophos (meaning "crest") and sauros (meaning "lizard" or "reptile")

it was 12 feet tall

We know very little about how they raised their young. We know that most, if not all, dinosaurs laid their eggs in nests. Troodon and Oviraptor are known to have incubated their young by sitting on the eggs, like modern birds. Dinosaurs such as Massospondylus and Maiasaura fed their young, but Troodon young probably took care of themselves as soon as they hatched.

The asteroid was about 6 miles across. When it crashed into what is now the Yucatan Peninsula, it threw so much dust into the upper atmosphere, that sunlight was blocked for months. Plants died without sunlight, and the herbivorous dinosaurs died without plants to eat. The carnivores soon died out, too, because their prey was gone.

There is also evidence that the Chixculub impact preceded the dinosaur extinction by hundreds of thousands of years, until another, possibly larger asteroid struck eliminated the non avian dinosaurs once and for all.

Even without the asteroids, dinosaurs were already dealing with the negative affects of climate change.

Stegosaurs had tail spikes called thagomizers. By swinging its tail at an enemy, it could wound it or chase it away.

YES

Saltopus

I think Styracosaurus would be more likely to fit your question than Saltopus, since Saltopus ''fingers'' were very delicate and definitely not hoof-like.

The Ichthyosaurs, predatory sea reptiles, were rather like modern dolphins. They existed from the Early Triassic Period (250 million years ago) till the Middle Cretaceous Period (100 million years ago).

Ankylosaurus died out 65.5 million years ago, at the same time as all non-avian dinosaurs, pterosaurs, plesiosaurs, and mosasaurs went extinct. They died out during the K-T Extinction Event, which is believed to have been caused by a 6 mile wide asteroid that crashed into the Yucatan Peninsula, leaving a 100 mile wide crater. The dust and ash thrown into the atmosphere blocked sunlight for months or years, which killed plants, as well as the animals that ate them, including Ankylosaurus.

The Mesozoic period (roughly 180MYA) was a period when much change was happening in the Earth's continental arrangement. The final stage of the break up of the supercontinent Pangaea is generally considered to have taken place in this period. Land and sea were different to how we see them today. Pangaea was on the onset of forming 2 smaller supercontinents called Laurasia and Gondwana. The Atlantic ocean had not yet formed. The Himalayas were not there. It was a very different picture to what we see today. Have a look at this page for further details concerning the break up of Pangaea. http://en.wikipedia.org/wiki/Pangaea

The Triceratops lived at the very end of the Cretaceous Period some 68 - 65.5 million years ago. To be more precise they lived in the Maastrictian Age the last stage in the Mesozoic Era. It only became extinct in the K-T extinction event that saw the death of all non-avian dinosaurs.