Dinosaurs, I believe, lived during the same time as humans did. And the bible does talk about them, just calls them behemoth.
And I think this is how it really was. here some not so old mentions of dinosaurlike creatures.
https://en.wikipedia.org/wiki/Mokele-mbembeThis is described to look like a longneck dinosaur, and was allegedly seen africa
There are rocks showing humans and dinosaurs together
http://www.ancient-origins.net/unexplained-phenomena/do-ica-stones-prove-mankind-coexisted-dinosaurs-advanced-technology-098989It is claimed they are faked, but the explenation is that ONE guy faked all of the over 16 thousand of those discovered stones while also new ones are discovered all the time
Marco Polos description of dragons
http://www.forbidden-history.com/marco-polo.html>"Leaving the city of Yachi, and traveling ten days in a westerly direction, you reach the province of Karazan, which is also the name of the chief city....Here are seen huge serpents, ten paces in length (about 30 feet), and ten spans (about 8 feet) girt of the body. At the fore part, near the head, they have two short legs, having three claws like those of a tiger, with eyes larger than a forepenny loaf (pane da quattro denari) and very glaring.">The jaws are wide enough to swallow a man, the teeth are large and sharp, and their whole appearance is so formidable, that neither man, nor any kind of animal can approach them without terror. Others are met with of a smaller size, being eight, six, or 5 paces long; and the following method is used for taking them. In the day-time, by reason of great heat, they lurk in caverns, from whence, at night, they issue to seek their food, and whatever beast they meet with and can lay hold of, whether tiger, wolf, or any other, they devourAll signs humans were living during the same time as dinosaurs. What do you think they did when it was said some heroes slayed a dragon?