and arent modern day eritrean people mixed and are diluted africans?
those facial characteristics arent what an african would look like in 5000bc
those facial characteristics are native to Africa
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Another example of the use of a socially constructed typological paradigm is in studies of the Nile Valley populations in which the concept of a biological African is restricted to those with a particular craniometric pattern (called in the past the 'True Negro' though no 'True White' was ever defined). Early Nubians, Egyptians, and even Somalians are viewed essentially as non-Africans,
when in fact numerous lines of evidence and an evolutionary model make them a part of African biocultural/biogeographical history. The diversity of 'authentic' Africans is a reality. This diversity prevents biogeographical/biohistorical Africans from clustering into a single unit, no matter the kind of data." (The Persistence of Racial Thinking and the Myth of Racial Divergence, S. O. Y. Keita, Rick A. Kittles, American Anthropologist, New Series, Vol. 99, No. 3 (Sep., 1997), pp. 534-544)
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presents all tropical Africans with narrower noses and faces as being related to or descended from external, ultimately non-African peoples. However, narrow-faced, narrow-nosed populations have long been resident in Saharo-tropical Africa... and their origin need not be sought elsewhere. These traits are also indigenous.
The variability in tropical Africa is expectedly naturally high. Given their longstanding presence, narrow noses and faces cannot be deemed `non-African."(S.O.Y. Keita, "Studies and Comments on Ancient Egyptian Biological Relationships," History in Africa 20 (1993), page 134 )
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The living peoples of the African continent are diverse in facial characteristics, stature, skin color, hair form, genetics, and other characteristics. No one set of characteristics is more African than another. Variability is also found in "sub-Saharan" Africa, to which the word "Africa" is sometimes erroneously restricted. There is a problem with definitions. Sometimes Africa is defined using cultural factors, like language, that exclude developments that clearly arose in Africa.
For example, sometimes even the Horn of Africa (Somalia, Ethiopia, Eritrea) is excluded because of geography and language and the fact that some of its peoples have narrow noses and faces.
However, the Horn is at the same latitude as Nigeria, and its languages are African. The latitude of 15 degree passes through Timbuktu, surely in "sub-Saharan Africa," as well as Khartoum in Sudan; both are north of the Horn.
Another false idea is that supra-Saharan and Saharan Africa were peopled after the emergence of "Europeans" or Near Easterners by populations coming from outside Africa. Hence, the ancient Egyptians in some writings have been de-Africanized. These ideas, which limit the definition of Africa and Africans, are rooted in racism and earlier, erroneous "scientific" approaches." (S. Keita, "The Diversity of Indigenous Africans," in Egypt in Africa, Theodore Clenko, Editor (1996), pp. 104-105. )