Both "Homo erectus" and "Homo neanderthalensis" became extinct by the end of the Paleolithic. Descended from "Homo sapiens", the anatomically modern "Homo sapiens sapiens" emerged in eastern Africa  BP, left Africa around 50,000 BP, and expanded throughout the planet. Multiple hominid groups coexisted for some time in certain locations. "Homo neanderthalensis" were still found in parts of Eurasia  BP years, and engaged in an unknown degree of interbreeding with "Homo sapiens sapiens". DNA studies also suggest an unknown degree of interbreeding between "Homo sapiens sapiens" and "Homo sapiens denisova".