Complex sentence: Members of the Machairodontinae family are the best known "true" sabrecats who existed from late Miocene to late Pleistocene in Africa, Eurasia, and the Americas.
Split into simpler sentences: Members of the Machairodontinae family are known as the "true" sabrecats, and are the best known. They existed from the late Miocene to late Pleistocene in Africa, Eurasia, and the Americas.