What is the name of the time period that evolved out of the Oldowan, or pebble tool, tradition and lasted until about 15,000 years ago

The Oldowan (or Mode I) was a widespread stone tool archaeological industry (style) in prehistory. These early tools were simple, usually made with one or a few flakes chipped off with another stone. Oldowan tools were used during the Lower Paleolithic period, 2.6 million years ago up until at least 1.7 million years ago, by ancient Hominins (early humans) across much of Africa, South Asia, the Middle East and Europe.