Scientists found a mysterious mark inside a 236-million-year-old fossil in Argentina that may reveal anci The Times of IndiaIn Argentina, one fossil bone from a 236-million-year-old cynodont contained a rare clue about birth. Researchers found its newborn size resembled mammals, suggesting live birth evolved 95 million years earlier than thought The Economic TimesMammal ancestors were giving birth to live young 236 million years ago New ScientistBest of 2026-08-14 Phys.orgWhen Did Animals Start Giving Birth to Live Young? This 236-Million-Year-Old Fossil Might Rewrite Mammals' Evolutionary History Smithsonian Magazine
Scientists found a mysterious mark inside a 236-million-year-old fossil in Argentina that may reveal anci The Times of IndiaIn Argentina, one fossil bone from a 236-million-year-old cynodont contained a rare clue about birth. Researchers found its newborn size resembled mammals, suggesting live birth evolved 95 million years earlier than thought The Economic TimesMammal ancestors were giving birth to live young 236 million years ago New ScientistBest of 2026-08-14 Phys.orgWhen Did Animals Start Giving Birth to Live Young? This 236-Million-Year-Old Fossil Might Rewrite Mammals' Evolutionary History Smithsonian Magazine
