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I have integrated this web page on human evolution into an electronic text, " Nature's Holism - Holism.
Between the mid-1930s and mid 1940s geneticists, systematists and palaeontologists collaborated to create a united approach to evolution, the "Modern Synthesis".
Ernst Mayr reduced all the hominid (human ancestor: (see hominid books)) fossil records to three species, A.
Evolution & Ecology " (see its HOME PAGE .) The result is that some areas, such as the glossary are shared.
Widgets Human evolution from an ancestral primate species is not a vague hypothesis, but a historical fact.
 Adaptation is genetically based and so leads to phenotypic changes that accumulate over time;  Speciation (species formation) evolves through reproductive isolation and (genetic) divergence of populations;  Genetic changes through natural selection lead to new species and eventually new taxa .Scientists now have accurate methods (see below ) for dating fossils.methods rely on characteristic faunal and geological patterns to bracket the period when the fossil existed.Our hominoid line, humans, gorillas, chimpanzees and lesser apes, is one among the superfamily Hominoidea.See the taxonomic table of primates for two comparative classification shcemes.