Latest Mary H. Schweitzer Stories
By Perkins, Sid New study questions analyses of T. rex remains Three years ago, a team of scientists rocked the paleontology world by reporting the recovery of flexible tissue resembling blood vessels from a 68- million-year-old dinosaur fossil.
Scientists studying the mighty T. rex may have found a way to tell a she rex from a he rex. The dinosaurs knew the difference, of course. But scientists, with only fossilized bones to work from, have had little to go on as far as knowing which specimen was a male and which was a female.
- Growing in low tufty patches.