No human skeletal remains have been found at Paleo-Indian camp sites; there is also an absence of bone tools, which were probably used. The lithic material which remains, indicates that Paleo-Indians variety of tools, including points, scrapers, gravers, knives, and choppers; these were made from lamellar flakes, struck from cores of flint or similar materials. Many of the projectile points show remarkable craftsmanship; they are expertly chipped or flaked into shape; they sometimes have concave bases; ground basal edges, to prevent cutting the thongs used in hafting; and central fluting, for blood-letting or ease in hafting. Since men were the hunters, they were doubtless responsible for the excellent craftsmanship displayed on the points. Their weapons included spears, stones and clubs, and the Late Paleo-Indian probably used the throwing stick.
Knowledge and use of fire for light, warmth, and the crudest culinary purposes, is believed to have been brought into North America by early migrants from Asia. The Paleo-Indian had to struggle constantly against the elements of his/her environment; he/she probably seldom gathered anything to store, and wandered frequently in search of food.