Scrabble?! PROTOHUMANS

Definitions of PROTOHUMANS in various dictionaries:

A number of varieties of Homo are grouped into the broad category of archaic humans in the period contemporary and predating the emergence of the earliest anatomically modern humans (Homo sapiens) over 315 ka. The term typically includes Homo neanderthalensis (430+–38ka), Denisovans, Homo rhodesiensis (300ka–125ka), Homo heidelbergensis (600ka–200ka), Homo antecessor. There is no universal consensus on this terminology, and varieties of "archaic humans" are included under the binomial name of either Homo sapiens or Homo erectus by some authors. Archaic humans had a brain size averaging 1,200 to 1,400 cubic centimeters, which overlaps with the range of modern humans. Archaics are distinguished from anatomically modern humans by having a thick skull, prominent supraorbital ridges (brow ridges) and the lack of a prominent chin.Anatomically modern humans appear from over 315,000 years ago (Jebel Irhoud) and after 70,000 years ago (see Toba catastrophe theory), gradually supplanting the "archaic" human varieties. Non-modern varieties of Homo are certain to have survived until after 30,000 years ago, and perhaps until as recently as 10,000 years ago. Which of these, if any, are included under the term "archaic human" is a matter of definition and varies among authors. Nonetheless, according to recent genetic studies, modern humans may have bred with "at least two groups" of ancient humans: Neanderthals and Denisovans. Other studies have cast doubt on admixture being the source of the shared genetic markers between archaic and modern humans, pointing to an ancestral origin of the traits originating 500,000–800,000 years ago.Another group may also have been extant as recently as 11,500 years ago, the Red Deer Cave people of China. Chris Stringer of the Natural History Museum in London has suggested that these people could be a result of mating between Denisovans and modern humans. Other scientists remain skeptical, suggesting that the unique features are within the variations expected for modern human populations.