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Permian-Triassic extinction event
The Permian-Triassic (P-T or PT) extinction event, sometimes informally called the Great Dying, was an extinction event that occurred approximately 251.0 million years ago (mya), forming the boundary ... > more -
Genetic drift
Genetic drift is the term used in population genetics to refer to the statistical drift over time of gene frequencies in a population due to random sampling effects in the formation of successive ... > more -
Homo habilis
Homo habilis ("handy man", "skillful person") is a species of the genus Homo, which lived from approximately 2.5 million to 1.8 million years ago at the beginning of the Pleistocene. The definition ... > more -
Chimpanzee
Chimpanzee, often shortened to chimp, is the common name for the two extant species in the genus Pan. The better known chimpanzee is Pan troglodytes, the Common Chimpanzee, living primarily in West, ... > more -
Artifact (archaeology)
An artifact or artefact is any object made or modified by a human culture, and often one later recovered by some archaeological endeavor. Examples include stone tools such as projectile points, ... > more -
Recent single-origin hypothesis
The single-origin hypothesis (or Out-of-Africa model) is one of two accounts of the origin of anatomically modern humans, Homo sapiens. Because of the scarcity of fossils and the discovery of ... > more -
Stegosaurus
Stegosaurus, meaning "plated lizard", because of the plates on its back was a genus of large herbivorous dinosaurs from the Upper Jurassic of North America. It is among the most easily identifiable ... > more -
Brachiosaurus
The Brachiosaurus is a famous dinosaur that lived during the Jurassic period. One of the largest ever dinosaurs to walk the earth, it has become a famous animal synonymous with dinosaurs, and is ... > more
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