World Historic Fact who is Cro-Magnon is Today's Yamnaya Culture.

What invented Cro-Magnon?  CAUTION:

It is still hard to say precisely where Cro-Magnons belong in recent human evolution, but they had a culture that produced a variety of sophisticated tools such as retouched blades, end scrapers, “nosed” scrapers, the chisel-like tool known as a burin, and fine bone tools (see Aurignacian culture).

Cro-Magnon, population of Homo European dating, from the Upper Paleolithic Period (c. 40,000 to c. 10,000 years ago) in Europe. ... neanderthalensis), to be representative of prehistoric humans. Modern studies suggest that Cro-Magnons emerged even earlier, perhaps as early as 45,000 years ago.

: a hominid of a tall erect race of the Upper Paleolithic known from skeletal remains found chiefly in southern France and classified as the same (Hominin species) as present- <>  

Are modern humans Cro-Magnon?  What Are Cro-Magnons? "Cro-Magnon" is the name scientists once used to refer to what are now called Early Modern Humans or Anatomically Modern Humans—people who lived in our world at the end of the last ice age (ca. 40,000–10,000 years ago); they lived alongside Neanderthals for about 10,000 of those years.Nov 14, 2019

Is Cro-Magnons a Homo erectus? 

They came from different ancient Hominids then interbred with other archaic humans. There is no distinction between Cro-magnon and Homo erectus . Cro-Magnon is a Homo modern human. Yes