50 Years Ago Paleontology

50 years ago, the dinosaurs’ demise was still a mystery 

Excerpt from the July 22, 1972 issue of Science News

an illustration of a dinosaur skeleton partly buried by debris

Fifty years ago, scientists thought dinosaurs’ warm blood or soft eggs may have caused the reptiles to die out (illustration of a partially buried dinosaur skeleton shown). Now, mounting evidence points to a killer asteroid impact.

MARK GARLICK/Science Photo Library/Getty Images

By Maria Temming

- More than 2 years ago

July 22, 1972 issue of Science News

What did in the dinosaurs: Warm blood or soft eggs? — Science News, July 22, 1972

Dinosaurs might have been endothermic, or warm-blooded….