Probably not more than about 28 years. Growth rings indicate the T. rex grew quickly, reaching adult size as a teenager—and that the animals died young. The oldest specimen analyzed was only 28 years old.
These studies, done in conjunction with paleontologists at AMNH, document that that Tyrannosaurus, which attained a weight of more than 10,000 pounds as an adult, reached sexual maturity at about 20 years of age and lived for up to 28 years.
As evidence suggests that many dinosaurs had metabolisms more like birds, they probably did not have the same relative life spans as large reptiles. It is possible that sauropods reached 50-100 years, large theropods a bit less and smaller dinosaurs could live to about 10 or 20.
After prolonged study of the growth patterns in the bones, "Scotty" was also declared as one of the oldest known T. rex fossils at 30 years old. The specimen known as Trix is also estimated to have been 30 years old upon its death. However, its age was later revised to ~23–27 years old.
The longest-lived dinosaurs were the sauropods, which could reach lengths of over 100 feet and weights of over 50 tons. These massive herbivores could also live for over 200 years!
Evidence suggests an asteroid impact was the main culprit. Volcanic eruptions that caused large-scale climate change may also have been involved, together with more gradual changes to Earth's climate that happened over millions of years.
In an evolutionary sense, birds are a living group of dinosaurs because they descended from the common ancestor of all dinosaurs. Other than birds, however, there is no scientific evidence that any dinosaurs, such as Tyrannosaurus, Velociraptor, Apatosaurus, Stegosaurus, or Triceratops, are still alive.
Bigger than Tyrannosaurus rex, Spinosaurus lived during the Cretaceous era between 145.5 and 65.5 million years ago, which was the last period of the Mesozoic Era following the Jurassic Era and ending with the extinction of dinosaurs, except birds. Unlike most dinosaurs, it seems that spinosaurs liked the water.
Giganotosaurus and Tyrannosaurus Rex did not live on the earth at the same time. Giganotosaurus was bigger and faster, but T-Rex had a stronger bite force and more teeth. In a fight between Giganotosaurus and T-Rex, the Tyrannosaurus would win.
The Triceratops, described in the latest Royal Society Biology Letters, dates to 65 million years ago, the critical period of time associated with the Cretaceous-Tertiary (K-T) extinction event that wiped out all non-avian dinosaurs and many other animals and plants.
It is a longstanding mystery why dinosaurs became and remained so plentiful for more than 180 million years. The traditional theory: dinosaurs suddenly replaced other land animals because of special traits that gave them an evolutionary advantage, such as being warm-blooded, nimble and able to occupy varied habitats.
Dinosaurs lived during the Triassic, Jurassic and Cretaceous. During these periods, the climate was much warmer, with CO₂ levels over four times higher than today. This produced abundant plant life, and herbivorous dinosaurs may have evolved large bodies partly because there was enough food to support them.
No! After the dinosaurs died out, nearly 65 million years passed before people appeared on Earth. However, small mammals (including shrew-sized primates) were alive at the time of the dinosaurs.
rex Killed by Lowly Parasite, Study Suggests. The famous dinosaur known as Sue — the largest, most complete and best preserved T. rex specimen ever found — might have been killed by a disease that afflicts birds even today, scientists now suggest.
Though both dinosaurs were only distantly related, they both had enormous bodies with oversized heads and vastly undersized arms. The idea is that as the predators' heads and bodies got bigger, their arms got correspondingly smaller, perhaps to help them balance.
At a length of more than 50 feet (15 metres) and a mass of nearly 50 tons (tonnes), Megalodon was both larger and heavier than Tyrannosaurus rex.
“Tyrannosaurus rex remains the one true king of the dinosaurs,” said paleontologist Steve Brusatte, study coauthor of the latest analysis and professor at The University of Edinburgh's School of Geosciences in Scotland, in a news release.
In Jurassic Park 3, the Spinosaurus easily defeated the T-rex by clenching its neck tightly between its jaws.
Of course, the Tyrannosaurus Rex had the strength to be called “the strongest dinosaur”. Rex, a Latin word meaning “King”, reflects the kingly status it achieved due to its imposing characteristics.
T-REX'S SWAM!!! When they weren't chasing down prey or scavenging for food, new evidence suggests that Tyrannosaurus Rex went for lengthy dips. Researchers believe the tiny- armed carnivores were surprisingly adept swimmers!
T-Rex is smaller than Spinosaurus, but the T-Rex is smarter and built to kill. The Spinosaurus was heavier, taller, and longer than the T-Rex, but the latter's bite was far more powerful. The Spinosaurus was also believed to be semi-aquatic, but the T-Rex lived solely on land.
rex jaw muscle anatomy and analyses of living relatives like crocodilians and birds showed its bite force measured about 8,000 pounds (3,630 kg), the strongest of any dinosaur ever estimated.
The last non-bird dinosaurs were living at a time of environmental change, some of which began millions of years before they went extinct. The asteroid was the final, killer blow.
Dinosaurs went extinct about 65 million years ago (at the end of the Cretaceous Period), after living on Earth for about 165 million years.
The results of this study, which were based on estimated real global biodiversity, showed that between 628 and 1,078 non-avian dinosaur species were alive at the end of the Cretaceous and underwent sudden extinction after the Cretaceous–Paleogene extinction event.