A supervolcano is a volcano capable of producing a volcanic eruption with an ejecta mass greater than 1015 kg (1012 t). Supervolcanoes occur when magma in the mantle rises into the crust but is unable to break through it and pressure builds in a large and growing magma pool until the crust is unable to contain the pressure. This can occur at hotspots (for example, Yellowstone Caldera) or at subduction zones (for example, Toba).
Homo habilis. An extinct hominid of the genus Homo that lived between 2.3 and 1.4 million years ago in Africa in the early Pleistocene period. H habilis was short, but had a less protruding face and a higher, rounder and larger brain cavity (Â±650 cc) than Australopithecus (Â±450 cc).
Distribution: Homo habilis is only found in Africa, while Homo erectus has a much wider distribution not only Africa but also spreading across areas of Europe and Asia. Morphology: Homo erectus had a proportionally larger brain than Homo habilis, and smaller teeth.See related links below for modern reconstructions of these species physical appearance. Posture: H. erectus walked upright, much like the modern human.However, H. habilis stooped over and did not walk upright.orphology: Homo erectus had a proportionally larger brain than Homo habilis, and smaller teeth. See related links below for modern reconstructions of these species physical appearance. Posture: H. erectus walked upright, much like the modern human. However, H. habilis stooped over and did not walk upright.