99-million-year-old species weighed about as much as a couple of dollar bills
(Newser) -
Scientists say they've discovered the smallest known dinosaur which, at an estimated 2 grams, was roughly "the weight of two dollar bills," per Live Science . The skull of the new birdlike species, about the size of the smallest hummingbird on Earth today, was found in a 99-million-year-old,...