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The timeline of human evolution outlines the major events in the evolutionary lineage of the modern human species, Homo sapiens, throughout the history of life, beginning some 4 billion years ago down to recent evolution within H. sapiens during and since the Last Glacial Period.
Mass extinctions are characterized by the loss of at least 75% of species within a geologically short period of time (i.e., less than 2 million years). [18] [51] The Holocene extinction is also known as the "sixth extinction", as it is possibly the sixth mass extinction event, after the Ordovician–Silurian extinction events, the Late Devonian extinction, the Permian–Triassic extinction ...
At long irregular intervals, Earth's biosphere suffers a catastrophic die-off, a mass extinction, [9] often comprising an accumulation of smaller extinction events over a relatively brief period. [10] The first known mass extinction was the Great Oxidation Event 2.4 billion years ago, which killed most of the planet's obligate anaerobes.
The hominoids are descendants of a common ancestor.. Homo sapiens is a distinct species of the hominid family of primates, which also includes all the great apes. [1] Over their evolutionary history, humans gradually developed traits such as bipedalism, dexterity, and complex language, [2] as well as interbreeding with other hominins (a tribe of the African hominid subfamily), [3] indicating ...
The human species contributes to this disruption—even without intending to—because of our innate capabilities to alter the planet at this stage of our cultural evolution; for instance, we now can harness energy from beneath the Earth's surface. Homo sapiens also can adapt relatively quickly to almost any environment on this
Homo (from Latin homÅ ' human ') is a genus of great ape (family Hominidae) that emerged from the genus Australopithecus and encompasses only a single extant species, Homo sapiens (modern humans), along with a number of extinct species (collectively called archaic humans) classified as either ancestral or closely related to modern humans; these include Homo erectus and Homo neanderthalensis.
A source of confusion in determining the exact age of the Pan–Homo split is evidence of a more complex speciation process than a clean split between the two lineages. Different chromosomes appear to have split at different times, possibly over as much as a 4-million-year period, indicating a long and drawn out speciation process with large ...
A New Human: The Startling Discovery and Strange Story of the 'Hobbits' of Flores, Indonesia. Smithsonian Books (2007). ISBN 978-0-06-089908-0; Oppenheimer, Stephen. Out of Eden: The Peopling of the World. Constable (2003). ISBN 1-84119-697-5; Roberts, Alice. The Incredible Human Journey: The Story of how we Colonised the Planet. Bloomsbury (2009).