[DevilsWin]

This may be a fact or it may not be a fact, but how can any scientists or anyone have enough information about dinosaurs to judge if a t-rex's vision is based off of movement? Alls they have are bones, so how could they deduct those facts based off of bones? (I'm not just basing that off Jurasic Park, although I can't find a straight answer either way.)

There's an unending number of facts just like that one that would be impossible to conclude on based off of bones alone.

Anyone know how they justify saying things like that?

They have found more than just bones.

LOL Some Pre-historic mammals have been found fossilized as well as mummified.