Because, even looking at the bones, you can not know when it was born because there were no records or anything.
Oh, dude, we can only approximate the absolute age of the allosaurus because, like, we can't just ask them for their birth certificate, you know? We gotta rely on things like fossil records and scientific dating methods to take a wild guess at how old these dinos really were. So, yeah, it's all just a big estimation game, but hey, at least we're trying, right?
No, allosaurus was the top predatore of its age.
Allosaurus would have grown for its entire life, but they would reach nearly full size by around age 20. Their maximum growth rate was about 330 lb per year, and they achieved this around age 15. By age 10 or before Allosaurus were sexually mature.
Allosaurus started out with much longer legs in proportion to their bodies than those of adults. This allowed them to run faster and use different hunting strategies than adults. By around 10 years old or possibly even earlier, Allosaurus reached sexual maturity. Their maximum growth rate was reached around age 15, gaining about 330 pounds every year. By about age 20, they would almost stop growing.
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The study of strata is called stratigraphy. Stratigraphy can be used to determine an approximate age of fossils in rocks.
The study of strata is called stratigraphy. Stratigraphy can be used to determine an approximate age of fossils in rocks.
The study of strata is called stratigraphy. Stratigraphy can be used to determine an approximate age of fossils in rocks.
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.
Allosaurus probably had a lifespan of about 28 years maximum. Although they didn't reach their nearly full size until they were about 20 years old, they reached sexual maturity by age 10. This was an adaptation because most Allosaurus would never live long enough to reach full size, but this way more of them still had a chance to reproduce before they died.
three years old
25 years