Crystals In Volcanic Ash Reveal New Details About Dinosaur Origins
dinosaur have been major actor in ecosystem for over 200 million years , yet we ’re still not entirely sure about their early account . Now , consort to research worker analyzing radioactive isotopes in crystals from volcanic ash , dinosaur appeared on Earth relatively quickly after their evolutionary predecessor , calleddinosauromorphs . The finding are published inProceedings of the National Academy of Sciencesthis week . Our sympathy of dinosaur inception and their rise to protrusion has been limited by poor old age restraint in the fossil disk ....