Stegosaurus

Stegosaurus existed from about 155 to 150 million years ago. That was during the Kimmeridgian and Tithonian stages of the Jurassic period. Stegosaurus fossils were discovered in Morrison, Colorado in 1877 by Othniel Charles Marsh.

Stegosaurus lived in what is now the USA between 155 and 150 million years ago, as well as Portugal.

In America, Stegosaurus would have lived alongside the carnivores Allosaurus, Epanterias, Saurophaganax, Ceratosaurus, Elaphrosaurus, Torvosaurus, and Ornitholestes, the sauropods Diplodocus, Apatosaurus, Camarasaurus, Barosaurus, Eobrontosaurus, and Brachiosaurus, the ornithopods Dryosaurus, Camptosaurus, Drinker, Othnielia, Othnielosaurus, Uteodon, the stegosaur Hesperosaurus, the ankylosaurs Mymooropelta and Gargoyleosaurus,

In Portugal, Stegosaurus probably lived alongside the carnivores Allosaurus, Ceratosaurus, and Lourinhanosaurus, the stegosaurids Miragaia and Dacentrurus, the ornithopod Draconyx, the ankylosaur Dracopelta, and the sauropods Lusotitan and Dinheirosaurus.

Tetrapod refers to any terrestrial vertebrate. That includes amphibians like frogs, reptiles like dinosaurs, including Stegosaurus, birds, and mammals, including humans.

Well, nobody knows because Stegosauruses have been extinct for over 1.4 million years. However, Stegosaurus may have layed 1-4 eggs at a time. More then likely the father did not stick around to help the mother raise the young.

Whenever a predator like Allosaurus came around, the mother would have got in front of her young flapping the plates up and down and swishing her tail in an attempt to scare it away. If this did not work, she may have turned around and waved her tail in the enemy's face, possibly inflicting some sort of injury to it with the spikes on her tail.

Stegosaurus fossils come from the Morrison Formation in the western USA and date to between 155 and 150 million years ago. Some have recently been found in Portugal from the same time period. At that time, the area was a semi-arid subtropical plain with distinct wet and dry seasons. Near rivers, there were forests of conifers, cycads, ginkgoes, ferns, and horsetails. Further from the rivers there were open areas covered in ferns with scattered trees. It is believed that Stegosaurus preferred the drier fern fields.

Stegosaurus was not a fast runner. To compensate, they had four long tail spikes made of bone. The Stegosaurus would keep its tail end towards an attacker, and attempt to stab the attacker with its thagomizers.

There are many theories as to why the stegosaurus (and indeed, all the dinosaurs) went extinct. The current prevailing theory is that a meteor hit the Earth and caused large amounts of CO2 to clog the atmosphere causing an ice age which was too cold for the cold-blooded reptiles.

Answer2: That dinosaurs existed abundantly throughout the earth, in an ancient landscape long ago vanished, is obvious from the fossil record. But these amazing creatures, along with countless other animal and plant kinds, passed out of existence. As to just when these things took place, paleontologist D. A. Russell states: "Unfortunately, existing methods for measuring the duration of events that happened so long ago are relatively imprecise."Fossil record does not yield its secrets so easily and that no one on earth today really knows all the answers.

Listing some speculations as to what happened to them, Princeton scientist G. L. Jepson stated:

"Authors with varying competence have suggested that dinosaurs disappeared because the climate deteriorated . . . or that the diet did. . . . Other writers have put the blame on disease, parasites, . . . changes in the pressure or composition of the atmosphere, poison gases, volcanic dust, excessive oxygen from plants, meteorites, comets, gene pool drainage by little mammalian egg-eaters, . . . cosmic radiation, shift of Earth's rotational poles, floods, continental drift, . . . drainage of swamp and lake environments, sunspots."-The Riddle of the Dinosaur.

It is apparent from such speculation that scientists are not able, with any certainty, to answer the question: What happened to the dinosaurs?

University of Arizona scientist David Jablonski concludes that 'for many plants and animals, extinction was abrupt and somehow special.Mass extinctions are not merely the cumulative effects of gradual dyings. Something unusual happened.' Their arrival was also abrupt. Scientific American observes: "The sudden appearance of both suborders of the pterosaurs without any obvious antecedents is fairly typical of the fossil record." That is also the case with dinosaurs. Their relatively sudden appearance and disappearance contradicts the commonly accepted view of slow evolution.

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.

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.

Yes, Stegosaurus was an herbivorous dinosaur. They probably ate mosses, ferns, horsetails, cycads and conifers. They only ate plants that grew within about 3 feet of the ground, unless they were able to rear onto their hind legs. 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.

Stegosaurus had long hind limbs and short forelimbs. Its head and neck were very low to the ground, and its head was small, with a beak that it used for cropping off vegetation. They had 17 plates on their back in two rows, one row on either side of the spines. They had four tail spikes, or thagomizers, that they used for self defense.

There are a number of theories regarding the function of Stegosaurus plates.

# They were used for thermoregulation. The blood vessels in the plates allowed the animal to cool itself in the wind. However, close relatives of Stegosaurus didn't have plates that would be a good shape for cooling, so plates probably weren't necessary for cooling the animal. # They were used for display or to intimidate rivals. Stegosaurus plates could have potentially blushed red. One piece of evidence against this is that both male and female Stegosaurus had similar plates, whereas displays are usually only present on males. # Some say Stegosaurus plates were used as armor, but they left the sides exposed and thus wouldn't have been very effective as armor. Paleontologist Robert Bakker believes that the plates may have been mobile, though, and that they could move them to help fight off predators. If he is correct, the plates would hang down on its back when Stegosaurus wasn't using them.

Ceratosaurus was a theropod, a member of the suborder that gave rise to birds. Of all of the dinosaur groups, theropods are most likely to have been warm blooded. However, fossil evidence suggests that it wasn't only theropods and birds, but all dinosaurs that were warm blooded.

Stegosaurus existed from about 155 to 150 million years ago. That was during the Kimmeridgian and Tithonian stages of the Jurassic period.

Because Stegosaurus had much longer hind limbs than forelimbs, it couldn't have traveled very fast on all four legs. At 5.5 tons, it was also too heavy to run or walk on hind legs like hadrosaurs could. Thus, the top speed of an adult Stegosaurus was probably about 4 to 5 miles per hour.

one of the relatives of the stegosaurus is the anxylosaurus

About 29 ft 6 in (9 m) long, it had short forelegs, four long bony spikes on a flexible tail, and two rows of upright triangular bony plates running along the back, which gave it a serrated profile.

Baby Stegosaurus would have made an easy meal for almost any carnivorous dinosaur, even small ones like Ornitholestes. However, Stegosaurus lived in herds and the parents would have done their best to protect the youngsters. Adult Stegosaurus had predators too, though. Carnivorous dinosaurs large enough to hunt adult Stegosaurus include Ceratosaurus, Torvosaurus, Allosaurus, Epanterias, and Saurophaganax.

There are four currently accepted species in the genus Stegosaurus. They are Stegosaurus armatus, Stegosaurus stenops, Stegosaurus sulcatus, and Stegosaurus longispinus.

Yes. All animals, including stegosaurus, require water.

Ankylosaurus had no evolutionary descendants. The only living descendants of dinosaurs are the birds. Birds evolved from small, feathered, meat eating or insectivorous dinosaurs that lived in trees.

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.

Originally, it was thought that the plates were used as armor. However, if this is the case, they still left the sides unprotected.

They may have been used to keep the animal cool, or to make them look larger to potential threats or each other.

They may even have been used as a ay for stegosaurs to recognize each other.

Stegosaurus had a brain that weighed about 2.8 oz, the same as a dog's brain. That is very small considering that the Stegosaurus was 30 feet long and weighed 5.5 tons. People often say that its brain was the size of a walnut or a pea, but that exaggerates its small size.