This is a little long, but thought it might be helpful. I did some research on this myself awhile back.
From one site....
Do the cavemen prove anything? So called "cavemen" have existed. Some may still exist. That is, I have heard of people living in caves. The Bible doesn't talk about cavemen in the sense you probably mean. From a practical rather than biblical standpoint, yes, the cavemen do prove something. They prove that men have adapted to their surroundings quite well. Some build houses, others live in caves, still others live in tents.
Do cavemen fit with the Bible?
Do I believe in "cavemen?" I sure do. Cavemen are just men who live in caves. There are real live cavemen that live in Australia today. At the town of Coober Pedy where it's so hot, people live under ground, instead of on top, and they have TV sets in their houses. Real live cavemen with TV sets!
You see, there have been many times in the past when people have lived in caves. You could imagine that after the event of the Tower of Babel, people spread out over the earth, and some of them would have gone and lived in caves. Because people have been so indoctrinated by evolution, they tend to think that because someone lived in a cave, they were primitive -- they were not as advanced as us or something like that.
Actually, it is interesting to look at the cave paintings of some of the people that lived in the past, like Cro Magnon man. Now, I certainly couldn't draw paintings as good as they have done. They showed people with their clothes and hats on. They were exquisite paintings. You see, these people were obviously highly intelligent and were not "ape men." Just because they live in a cave, doesn't mean they were primitive.
Do cavemen fit with the Bible? The answer is in Genesis. All people descended from Adam and Eve, even those people who lived in caves!
And another....
Are there dinosaurs in the Bible? And why would God want them? The answer to the second question is, the Bible doesn't say, and I don't know. Why does God want flies or dogs, or people? But are there dinosaurs in the Bible? Perhaps. We know that Genesis 1:20-25 tells about the creation of aquatic creatures, birds, reptiles, and other beasts. That appears to cover every category of dinosaur that I have ever read about. Job 3:8 and 41:11, Psalm 74:14 and 104:26 all speak of "Leviathan," a sea creature. Some interpret it to be the crocodile, but that is not certain. It may have been some aquatic dinosaur-like creature. We don't know. Job 40:15-24 tells of "behemoth," which some say is the hippopotamus, but may have been a dinosaur-like creature. The Bible lists some men with very long lives, even 900 years. If a modern lizard lived a comparatively long time, it would probably grow to a size resembling some large dinosaurs.
Interesting, thank you. I grew up a Christian and went to a Christian school, my Bible teacher taught us basically the same regarding the dinosaurs.