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Scientists \u2018thrilled\u2019 to find egg laid by our distant ancestors The Times Proto-mammals laid eggs, paleontologists finally confirm Popular Science First Fossilized Egg From a Mammal Ancestor Confirmed After 250 Million Years Discover Magazine","title":"Mammal ancestors laid eggs\u2014and this 250-million-year-old fossil proves it - Phys.org","url":"https://www.gstatic.com/_/mss/boq-dots/_/ss/k=boq-dots.DotsSplashUi_desktop_ms.OYgPNdDf9Nc.L.X.O/am=GAIFAAAADpgFDCgAAQ/d=1/ed=1/rs=ALs0n2OYSmDAUDetpsORI83j3dpsv55GJQ/m=syndicationarticleview,_b,_tp"}}... |