A "cerebral rubicon" in paleontology is the minimum cranial capacity required for a specimen to be classified as a certain paleospecies or genus. The term is mostly used in reference to human  URL The Scottish anthropologist Sir Arthur Keith set the limit at 750 cc for the genus Homo.  The minimum cranial capacity for the species Homo sapiens is generally set at 900cc. 
A "cerebral rubicon" in paleontology is the minimum cranial capacity required for a specimen to be classified as a certain paleospecies or genus. The term is mostly used in reference to human evolution.<ref URL The Scottish anthropologist Sir Arthur Keith set the limit at 750 cc for the genus Homo. <ref name=dirt/> The minimum cranial capacity for the species Homo sapiens is generally set at 900cc. <ref name=dirt/>
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