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→Are chimpanzees related to humans?
===Fossils===
===Fossils===
Many [[Human evolution|human fossils]] have been found, but chimpanzee fossils were not described until 2005. Existing chimpanzee populations in West and Central Africa do not overlap with the major human fossil sites in East Africa. However, chimpanzee fossils have now been reported from [[Kenya]]. The [[Theory of evolution|evolutionist]] researchers who discovered them asserted: "These fossils, from the Kapthurin Formation, Kenya, show that representatives of ''Pan'' were present in the East African Rift Valley during the Middle Pleistocene, where they were contemporary with an extinct species of ''Homo''.".<ref>McBrearty, S. and N. G. Jablonksi (2005), "First fossil chimpanzee," ''Nature'' '''437'''(7055):105-8. [https://www.ncbi.nlm.nih.gov/entrez/ Entrez PubMed], search on PMID 16136135</ref>
Many [[Human evolution|human fossils]] have been found, but chimpanzee fossils were not described until 2005. Existing chimpanzee populations in West and Central Africa do not overlap with the major human fossil sites in East Africa. However, chimpanzee fossils have now been reported from [[Kenya]]. The [[Theory of evolution|evolutionist]] researchers who discovered them asserted: "These fossils, from the Kapthurin Formation, Kenya, show that representatives of ''Pan'' were present in the East African Rift Valley during the Middle Pleistocene, where they were contemporary with an extinct species of ''Homo''.".<ref>McBrearty, S. and N. G. Jablonksi (2005), "First fossil chimpanzee," ''Nature'' '''437'''(7055):105-8. [https://www.ncbi.nlm.nih.gov/entrez/ Entrez PubMed], search on PMID 16136135</ref>
== Beta male chimpanzee behavior ==
'''See also:''' [[Beta male]]
Among [[chimpanzee]]s, [[beta male]]s attempt to gain alliances with gamma males in order to usurp the power of alpha males.<ref>[https://link.springer.com/article/10.1007/bf02381978 Alpha status and agonistic alliance in wild chimpanzees (Pan troglodytes schweinfurthii)] by T. Nishida, Primates volume 24, pages318–336 (1983)</ref>
==Notes and references==
==Notes and references==