Race (human categorization)

=== Models of human evolution ===
{{See also|Multiregional hypothesis|Recent single origin hypothesis}}

Today, all [[humans]] are classified as belonging to the species ''Homo sapiens''. However, this is not the first species of [[homininae]]: the first species of genus ''Homo'', ''[[Homo habilis]]'', evolved in East Africa at least 2 million years ago, and members of this species populated different parts of Africa in a relatively short time. ''[[Homo erectus]]'' evolved more than 1.8 million years ago, and by 1.5 million years ago had spread throughout Europe and Asia. Virtually all [[physical anthropologist]]s agree that ''[[Anatomically modern human|Archaic Homo sapiens]]'' (A group including the possible species ''[[Homo heidelbergensis|H. heidelbergensis]]'', ''H. rhodesiensis'', and ''H. neanderthalensis'') evolved out of African ''H. erectus'' ({{lang|la|[[sensu lato]]}}) or ''[[Homo ergaster|H. ergaster]]''.<ref>{{cite book |first1=Camilo J. |last1=Cela-Conde |author-link1=Camilo Jose Cela Conde |first2=Francisco J. |last2=Ayala |author-link2=Francisco J. Ayala |date=2007 |title=Human Evolution Trails from the Past |publisher=[[Oxford University Press]] |page=195}}</ref><ref>{{cite book |last=Lewin |first=Roger |author-link=Roger Lewin |date=2005 |title=Human Evolution an illustrated introduction |edition=Fifth |page=159 |publisher=[[Blackwell Publishing]]}}</ref> Anthropologists support the idea that [[anatomically modern humans]] (''Homo sapiens'') evolved in North or East Africa from an [[archaic human]] species such as ''H. heidelbergensis'' and then migrated out of Africa, mixing with and replacing ''H. heidelbergensis'' and ''H. neanderthalensis'' populations throughout Europe and Asia, and ''H. rhodesiensis'' populations in Sub-Saharan Africa (a combination of the [[Recent African origin of modern humans|Out of Africa]] and [[Multiregional origin of modern humans|Multiregional]] models).<ref name="StringerSurvivors">{{cite book |first=Chris |last=Stringer |author-link=Chris Stringer |title=Lone Survivors: How We Came to Be the Only Humans on Earth |date=2012 |location=London |publisher=Times Books |isbn=978-0-8050-8891-5 |url-access=registration |url=https://archive.org/details/lonesurvivorshow0000stri}}</ref>{{verify source|date=January 2013}}
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