175 million years.
Allosaurus existed about 150 million years ago. That was around the boundary of the Kimmeridgian and the Tithonian stages. Both of these stages were in the late Jurassic period of the Mesozoic era.
In human years, a jaguar that is two years old is actually fourteen years old in cat years. This is because for every year a cat ages in human years they age seven in cat years.
If a human is 3 years old, then a dog is 21 years old.
If a cat is 3 years-old. They are 29 years-old in human years.
It depends how old the human is.
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.
A seven year old dog would be about 41 years old in "human years".
A two year old wolf, in human years, is two years old.
A 21 year old cat is about 101 years old in human years.
At 15 yrs old a cat is 76 human years old. At 20 yrs old a cat is 96 human yrs. old. This is from a reliable publication. Figure about 85 yrs old human years at 16 yrs old.
the sun is 10 billion years old in human years
Divide the Dog years by 7 to get Human years equivalent. So you are 9 2/7 years old in Human years.