People mave many questions about Tyrannosaurus rex. Here are a few of them.

Q: How big is a T-Rex?
from Robby B, ?, ?, ?; July 11, 2001

A: T. rex was up to about 40 feet (12.4 m) long and about 15 to 20 feet (4.6 to 6 m) tall.

A: Not at all. T. rex was puny compared to many plant-eaters. There were also a few carnivores that were longer.

A: That's hard to do, because most of the fossils are incomplete and for most, only one fossil has been found, making any sweeping generalizations about size seem silly (you don't know if that particular dinosaur was big, average, or small). The biggest theropods include T. rex, Spinosaurus, Carcharodontosaurus, Bahariasaurus, Giganotosaurus, Acrocanthosaurus, Epanterias, Allosaurus, Torvosaurus, etc.

A: Tyrannosaurus is the name of a genus of meat-eating dinosaurs that includes many species, including the species Tyrannosaurus rex (also called T. rex)

A: T. rex probably lived in forested areas.

A: T. rex has about 200.

A: Tyrannosaurus rex weighed roughly 5 to 7 tons.

A: Fossilized T. rex dung has been found - it contained crushed Triceratops frill, so large plant-eating dinosaurs were certainly included in T. rex's diet.

A: T. rex fossils have been found in western North America and in Mongolia. For more information , clicik here.

A: No one knows; no fossilized T. rex heart has been found.

A: Tyrannosaurus rex lived during the late Cretaaceous period.

A: T. rex went extinct 65 million years ago in the K-T mass extinction.

A: The first Tyrannosaurus rex fossil was discovered by the famous fossil hunter Barnum Brown in 1902. Click here for more information.

A: In 2000, Jack and Celeste Horner, Bob Harmon, Larry Boychuk, and Greg Wilson found five T. rex fossils near the Fort Peck Reservoir in Montana, USA. This was the first time more than one T. rex was found in one spot.

A: 1. T. rex ate large plamt-eating dinosaurs like Triceratops. 2. Yes. 3. They hatched from eggs. 4. Click here. 5. Probably not much.

A: The dinosaur whose fossil is the youngest (making it the last known dinosaur) was a hadrosaurid that dates from after the K-T extinction. For more information, click here.

A: No. Fossilized T. rex skin has been found and it shows no evidence of feathers. Some paleontologists recently began to think that perhaps young T. rex may have had feathered skin. For information on T. rex, click here.

A: T. rex lived in what is now North America and Asia (Mongolia).

A: T. rex preyed upon Triceratops, and Triceratops probably fought back energetically (to put it mildly).

A: None - T. rex was an evolutionary dead end. Some other theropod dinosaurs (probably the maniraptors) evolved into the birds.

A: T. rex died during the K-T extinction, which may have been caused by a huge asteroid impact that changed the Earth's climate.

A: There is no fossil evidence to tell us anything about this (yet).

A: There is no evidence for this.

A: T. rex's footprint was 1.55 feet (46 cm) long (although its feet were much longer, about 3.3 feet (1 m) long; T. rex, like other dinosaurs walked on its toes).

A: Because when T. rex was found, it was the biggest meat-eating dinosaur known.

A: That isn't known - the amount would depend on T. rex's metabolism. If T. rex was cold-blooded, it would need much less food than if it was warm-blooded. For more information on T. rex, click here.

A: T. rex was first discovered in 1902. For more information on T. rex, click here.

A: I've seen guesstimates of about a 40-year life span for T. rex (but this could be way off). Q: 1.Whats the latest news on TYrannosaurus Imperator? 2.Are there any pictures of him? 3. WHo was deadlier when it came to killing, tyrannosaur family or dromaeosaur family
from Kenny, ?, ?, ?; December 19, 2000

A: As far as I know, nothing has been published on Rigby's new specimen of Tyrannosaurus, and the even the name is uncertain. It is rumored to have larger forearms than T. rex and is supposedly bigger in general. I have no idea which was deadlier.

A: Mostly with its famous teeth. For more information on T. rex, click here.

A: The various raptors (like Deinonychus, Velociraptor, Utahraptor, etc.) lived in different places and occupied very different niches than T. rex did. I doubt they would get along if put side by side. As to what they ate, it is known that T. rex ate Triceratops (and probably other large plant-eating dinosaurs, like hadrosaurs).

A: T. rex was at the top of the food chain.

A: It means king (in Latin). The T. should be capitalized because it stands for a genus (and the genus name is always capitalized, although the species name is not). The T. stands for Tyrannosaurus (which means tyrant lizard in Latin).

A: Because that's when T. rex evolved.

A: During the late Cretaceous period, the seasons were not as extreme as they are now (seasonality was low during the entire Mesozoic Era). There was probably no need for T. rex to migrate to find food in the winter (which was very mild compared to now).

A: T. rex's teeth were up to 9 inches (23 cm) long. For more information on T. rex, click here.

A: For T. rex's classification, click here. Q: what was the order of t-rex?
from Erica H., crosby, tx, united states; November 29, 2000

A: T. rex belonged to the order Saurischia. For more information on T. rex's classification, click here.

A: Most paleontologists think T. rex was an active predator but there is a minority viewpoint that it was mostly a scavenger. For more information on this debate, click here.

A: No T. rex eggs have been found yet.

A: No one knows.

A: The continents were arranged a bit differently during the late Cretaceous period (when T. rex lived) than they are now. T. rex fossils have been found in the western USA and in Mongolia (what was then the continent of Laurasia). For more information on T. rex, click here.

A: Gout has been found in some T. rex bones, For more information T. rex's bout with gout, click here.

A: There's a new T. rex that has been nicknamed imperator (but this is NOT an official name) and is it rumored to be about 15% bigger than other T. rex (but no information on it has been published by Rigby, so this is all uncertain). Sue (at the Field Museum in Chicago, IL) is the biggest otherwise.

A: T. rex

A: During the Cretaceous period, there were a lot of other animals, including other reptiles (like pterosaurs, ichthyosaurs, and mosasaurs), early mammals, many invertebrates (including insects, arachnids, worms, sponges, trilobites, ammonites, corals, etc.), fish (including sharks), and many more.