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What were the dinosaur's
lifespans?
from Bob K, age 6, Las Vegas, NV, USA; July 16, 2001
MIKE: That is hard to answer. When we estimate how fast dinosaurs grow, we can then estimate by how long it would take to reach a certain size. Most dinosaurs would live to be less than 100 years old. The super giants, like Paralititan, Argentinosaurus, and Amphicoelias, might make it to 150 years old. But this assumes that they always had access to food, did not suffer from diseases, and had a constant growth rate that was never interrupted. This is not the most accurate method. (Can you estimate the age of your parents just by their size?)
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