---- Allosaurus was a typical large theropod, having a massive skull on a short neck, a long tail and reduced forelimbs. Allosaurus fragilis, the best-known species, had an average length of 8.5 meters (28 ft),with the largest definitive Allosaurus specimen (AMNH 680) estimated at 9.7 meters long (32 ft),and an estimated weight of 2.3 metric tons (2.5 short tons).In his 1976 monograph on Allosaurus, James Madsen mentioned a range of bone sizes which he interpreted to show a maximum length of 12 to 13 meters (40 to 43 ft). As with dinosaurs in general, weight estimates are debatable, and since 1980 have ranged between 1500 kilograms (3300 lb), 1000 to 4000 kilograms (2200 to 8800 lb), and 1010 kilograms (2230 lb) for modal adult weight (not maximum). John Foster, a specialist on the Morrison Formation, suggests that 1000 kg (2200 lb) is reasonable for large adults of A. fragilis, but that 700 kg (1500 lb) is a closer estimate for individuals represented by the average-sized thigh bones he has measured.
How many teeth does an allosaurs?
An average adult Allosaurus grew to be about 28 feet long. However, an exceptionally large individual could be up to 32 feet long.
We don't know what its skin colour looks like but we can imagine the initial shape of its body. It would have a head similar to most carnivores, sharp rows of teeth, crests above the eyes, big bulky legs and a long tail to balance it.
It had a large head, a round body, and a long tail.
How long ago did Allosaurus live?
Allosaurus fossils date to between 155 and 150 million years ago. This was during the Kimmeridgian and Tithonian stages of the Jurassic period. The Jurassic was the second period of the Mesozoic era.
"T-Rex" means tyrannosaurus Rex. T-Rex appeared during the beginning of Jurassic about 205 million years ago just after the End Triassic mass extinction. They lived for 140 million years during the entire Jurassic and Cretaceous Period. During the Mesozoic Era, the only time T-Rex didn't exist is during Triassic period.
Dinosaur weight is highly debatable, but most scientists estimate between two and three tons, with some experts postulating almost four or four and a half tons.
Who were the ceratosaurus' enemies?
first of fall plesiosaurs is an order of extinct marine reptiles and their enemie was the tylosaurus
What other dinosaurs lived at the same time as tyrannosaurus?
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.
What some awesome facts about Allosaurus?
Allosaurus was the top predator of the Jurassic period. There were three known species, A. Atrox, A. Fragilis, and A. Amplexus, although some scientists believe there may have been as many as seven. The largest was Allosaurus Amplexus, up to 40 feet in length.
Did Allosaurus make a den or nest?
Allosaurus laid hard shelled eggs like other dinosaurs and like birds do today. They probably laid their eggs in nests. Evidence suggests that they didn't raise their young, however. This is because the proportions of juvenile Allosaurus legs are very different from those of full grown Allosaurus, and the different leg proportions suggest that juvenile used different hunting methods from adults. If this is the case, they probably had to fend for themselves, otherwise the adults would be hunting for them.
What was the life span of allosaurus?
Allosaurus had a maximum lifespan of about thirty years or a little less. Scientists determined this by looking at the growth rings in the bones of fossilized Allosaurus. That lifespan is actually longer than the lifespan of wild dogs and big cats, which only live around 15 to maybe 20 years, maximum.
Can a allosaurus beat up a trex?
bannana lol
Did allosaurus eat ceratosaurus?
Allosaurus was dominant over Ceratosaurus, but Ceratosaurus would not be usual prey for Allosaurus. Carnivore almost never prey on other carnivores. It is possible though on rare occasions Allosaurus may hunt and kill a Ceratosaurus for food.
What kind of enemies allosaurus have?
Allosaurus was the largest predator in its habitat, so the only formidable enemy of an adult Allosaurus would be another adult Allosaurus. For young Allosaurus, however, threats included Torvosaurus and Ceratosaurus, and even larger Allosaurus.
Allosaurus preyed on most herbivore dinosaurus. It would have hunted small dinosaurs like Dryosaurus and occasionally hunt larger ones like Stegosaurus. Herbivores like Diplodocus and Brachiosaurus would have been to large for Allosaurus to take down, but juveniles would have been smaller and much easier to hunt.
Allosaurus reproduced by laying hard shelled eggs, most likely in a nest of vegetation to incubate the eggs. It is unknown whether there was any parental care involved, and if there was, how much is also unknown.
How did the allosaurus reproduce?
Allosaurus reproduced by laying hard shelled eggs in a nest, probably composed of a pile of vegetation to incubate the eggs. It is unknown how much, or whether any, parental care was involved.
Where did people found the fossills allosaurus?
The first Allosaurus was discovered in Colorado in 1869 during the Bone Wars, by Ferinand Hayden. Since then paleontologists have identified seven different species of the Allosaurus. In Utah, over 60 sets of remains have been found in one site, ranging from the eggs of an Allosaurus to full grown adults. The Allosaurus is also the state fossil of Utah. Fossils and remains of the Allosaurus have been found in Asia, Africa, Australia, and all over North America.
What is the Allosaurus common name?
They are large-meat eating dinosaurs The name allosaurus means 'different lizard'. There were several allosaurus species. Allosaurus Atrox, Allosaurus Fragilis were the most common, averaging 28 to 32 feet in length, and weighing one to two tons.Rrecently, two new allosaur species have come to light, both as big as T Rex.
What color Is an Allosaurus dinosaur?
Apatosaurus walked on four sturdy legs, had a bulky body, and a very long, narrow tail. It also had a long neck and a small head. They were herbivores. They were also huge at 75 feet in length and weighing in at 18 to 25 tons.
Allosaurus fossils have been found in the Morrison Formation of the western USA, the Tendaguru Formation of Tanzania, and the Lourinhã Formation of Portugal and date to between 155 and 150 million years ago. Thus, they lived in North America, Africa, and at least part of Europe. The two former areas, if not all three, were semi-arid, subtropical to tropical plains with distinct wet and dry seasons. Along rivers, there would have been forests of conifers, cycads, ginkgoes, ferns, and horsetails. Farther from the rivers there were open expanses, but rather than being covered in grass, which didn't exist yet, they were covered in ferns, and there were scattered trees. Allosaurus probably preferred the more open areas for hunting.