When Othniel Charles Marsh discovered Stegosaurus in 1877, he believed that the plates laid on Stegosaurus's sides like the shingles on a roof. That is why he called it Stegosaurus, meaning "roof lizard" in Greek. Now we know that the plates stood up vertically.
"Brontosaurus" means thunder lizard. However, the name Brontosaurus is an invalid dinosaur name. The name Brontosaurus arose from the misidentification of another dinosaur, Apatosaurus. So, technically, Brontosaurus did not even exist, but its name does mean thunder lizard which I believe comes from the Latin word "tonitrus".
Stegosaurus was a herbivore so it is called a primary consumer.
Before extinction, a stegosaurus was a herbivore, not a carnivore, so no.
the stegosaurus tail had 4 spikes, so it can use it for deffence.
There are no animals today that resemble Stegosaurus. That is one reason why it is so difficult to figure out what their plates were used for.
Stegosauruses is valid (http://en.wiktionary.org/wiki/stegosauruses), but so is Stegosaurus (http://www.memidex.com/stegosaurus+reptile-genus). The same way Fish and Fishes are both valid. Usage is the same as well.
Yes, Stegosaurus was an herbivorous dinosaur. They probably ate mosses, ferns, horsetails, cycads and conifers. A study of the bite force and teeth of Stegosaurus suggests that they couldn't bite through sticks that were more than 1.2 centimeters thick, so they would have needed to eat very tender vegetation.
Adult Stegosaurus were hunted by Allosaurus, Epanterias, Saurophaganax, Torvosaurus, and Ceratosaurus. Young Stegosaurus were protected by their parents, but if they wandered off they would be vulnerable to attack by any carnivorous dinosaur, even the small Ornitholestes.
e.g-a,go,goes,so
There were four different species of Stegosaurus. The largest was Stegosaurus armatus, which grew to be 30 feet long and weighed 5.5 tons. Stegosaurus longispinus and Stegosaurus stenops both grew to be about 23 feet long, and because of their smaller sizes they weighed less, too.
Pterodactylus was a flying reptile with a 5 foot wingspan. Stegosaurus was 30 feet long and had a powerful tail with spikes, called thagomizers, that could kill a large predator. Pterodactylus would never be able to beat a Stegosaurus in a fight, so it would simply flee. Because Pterodactylus could fly, Stegosaurus would not be able to chase it down and kill it Stegosaurus and Pterodactylus probably did encounter each other often, as they lived in the same place at the same time.
A lizard is a reptile so there for its body temp. changes to room temp.