Hardly anything is known about them. Neither how they were physically, nor what cognitive abilities they had, or even where they lived. Nothing. In fact, what is known about this group of archaic humans, was discovered only 13 years ago, and is so little that they have no scientific name. They are simply known as Denisovans and they constitute the most mysterious relatives of the Hardly anything is known about them. Neither how they were physically, nor what cognitive abilities they had, or even where they lived. Nothing. In fact, what is known about this group of archaic humans, was discovered only 13 years ago, and is so little that they have no scientific name.