Well, consider that, in the Bible, Noah died at the age of 950, a full 350 years after the flood took place. God, meanwhile, created the Heavens and the Earth in seven days. Moses only lived to be 120.
Either some meaning has been lost in the various translations over the ages, or the time spans discussed in biblical references were not meant to be actual time spans as we measure them today, or both.
In geological and archaeological terms, dinosaurs became extinct roughly 64 million years ago, while humans have existed for roughly 500,000 years.