A study of the dental wear of 106 individuals buried in the Castellón Alto archaeological site (Granada, Spain) found that only women used their anterior teeth as tools to make threads and cords.
War in the time of Neanderthals: how our species battled for supremacy for over 100,000 years (The Conversation 11/02/20)
Around 600,000 years ago, humanity split in two. One group stayed in Africa, evolving into us. The other struck out overland, into Asia, then Europe, becoming Homo neanderthalensis – the Neanderthals. They weren’t our ancestors, but a sister species, evolving in parallel.