Intelligent Bible Research, SMARTLearning! FOLLOW US 13.8 Billion 65 Million, The Cretaceous–Paleogene (K–Pg) extinction event – Teritiary Extintion. Ended the Cretaceous period and with it, the entire Mesozoic Era, opening the Cenozoic Era that continues today. …2017 https://en.wikipedia.org/wiki/Cretaceous%E2%80%93Paleogene_extinction_event
13.8 Billion
65 Million, The Cretaceous–Paleogene (K–Pg) extinction event – Teritiary Extintion. Ended the Cretaceous period and with it, the entire Mesozoic Era, opening the Cenozoic Era that continues today. …2017
https://en.wikipedia.org/wiki/Cretaceous%E2%80%93Paleogene_extinction_event