What were the life spans of dinosaurs?

Answer 1

Scientists do not know the exact lifespan of dinosaurs, but they estimate that they lived about 75 to 300 years. Animal lifespans relate in part to their body size and in part to their type of metabolism. Their possible maximum age can be estimated from the maximum lifespans of modern reptiles, such as the 66-year lifespan of the common alligator and the impressive lifespan of some tortoises.

One specimen of the now-extinct Black Seychelles Tortoise, which was an adult when captured, lived a record 152 years in captivity (1766-1918) and had an accidental death. These estimates, based on lifespans of cold-blooded animals, would be too long if dinosaurs had metabolisms more similar to modern birds and mammals.

Answer 2

Around 1 to 300 years old. It ultimately depends on the death cause. Old age, fighting, starvation, many ways! However the main affect would be if the dinosaur were an herbivore or carnivore. The size of the dinosaur also greatly affects the span. If it were a small herbivore, around 5-20 feet you probably wouldn't survive much. Especially if you were a hadrosaur with no defense. If you were a large meat eater say daspeoletasaurus you would survive around 50 to 70 years. Large saurapods like mamenchiesaurus would last around 100-200 years. This is what the life span depends on.

Answer 3

That is difficult to say, but in general they had short lifespans. The longest living known Tyrannosaurus individual appears to have lived to be 28 years old, and the longest living known sauropod (huge, long-necked plant eater) seems to have lived to be 38 years old. The average was much shorter than that, though, considering the fact that most individuals were killed by predators before they were even adults.

However, estimates based on the body size of dinosaurs based on the body size of the dinosaur compared to the body sizes of mammals suggest that sauropods could have lived to be 100 years old. If sauropods had a completely cold-blooded metabolism, however, there is a chance that they could have lived 300 years!

All in all, the evidence is completely inconclusive. You can check the related links to read more.

Answer 4

To find the answer, look at the question, how old can dinosaurs live up to. I answered that question by the way, an unknown person takes all the credit. lol.

Answer 5

Sue, the oldest known T. rex, is estimated to have been 28 years old when she died. Some of the bigger Jurassic dinosaurs may have had life spans a decade or more longer than that.

Answer 6

Dinosaurs didn't have very long lifespans. The oldest theropods and sauropods known only lived to about age 30.

Answer 7

Roughly 40 years of life.

Answer 8

Six

Answer 9

nothing