The Neanderthal was an extinct species that lived in Europe and western Asia from 230,000 to 28,000 years ago. They co-existed with early modern humans known as Cro-Magnon for approximately 5,000 years, as evidenced by fossils found in Châtelperron caves. Neanderthals had short, robust bodies adapted to cold environments, with wide pelvises, short limbs, and prominent facial features including low brows and no chin. They lived in organized social groups and knew how to use fire and make tools from bones and stones.