Scientists discover rare ‘Jurassic’ fossil of creature from 166 million years ago, learn secrets of mammals’ evolution | Mint MintJurassic fossil juvenile reveals prolonged life history in early mammals Nature.comSkye fossils reveal secrets of first mammals to walk the Earth BBC.comEarly mammal could help answer one of biology’s biggest question, say experts The GuardianFossil Hints That Jurassic Mammals Lived Slow and Died Old The New York Times