Terrifyingly big prehistoric animals that are smaller today

(via Grunge) Life in the 21st century is hard enough, but just imagine how much more stressful your commute would be if you had to speed past Incredible Hulk-sized “terror birds” trying to flip over your car, or if your windshield kept getting smeared with the remains of insects bigger than volleyballs. Suddenly traffic jams don’t seem so bad, right? Millions of years ago, the ancestors of today’s animals grew to proportions so monstrously enormous that even Indiana Jones might faint.