There was a widespread opinion back in the beginning of 18th century, that predatory Dinosaur were usually had big body (3 meter tall or more, weighed at tons and else Bla Bla bla) but what was happen in around 1850’s brought change to that perspective, with the discovery of the smallest (at that time) carnivorous dinosaur ever. Compsognathus, the itty-bitty predator of Jurassic era… So why