Palaeolithic the early phase of the Stone Age, lasting about 2.5 million years, when primitive stone implements were used. The Palaeolithic period extends from the first appearance of artefacts to the end of the last ice age (about 8,500 years bc). The period has been divided into the Lower Palaeolithic, with the earliest forms of humankind and the emergence of hand-axe industries (ending about 120,000 years ago), the Middle Palaeolithic, the era of Neanderthal man (ending about 35,000 years ago), and the Upper Palaeolithic, during which only modern Homo sapiens is known to have existed.
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Stone Age , Stone Age Period of human evolution defined by the use of stone tools. The Stone Age dates from the earliest identifiable broken-pebble tools made by… Eolithic , E·o·lith·ic / ˌēəˈli[unvoicedth]ik/ • adj. dated Archaeol. of, relating to, or denoting a period at the beginning of the Stone Age, preceding the Pal… Stone , stone / stōn/ • n. 1. the hard, solid, nonmetallic mineral matter of which rock is made, esp. as a building material: the houses are built of stone |… cairn , cairn / ke(ə)rn/ • n. 1. a mound of rough stones built as a memorial or landmark, typically on a hilltop or skyline. ∎ a prehistoric burial mound mad… George Whetstone , whetstone •flagstone, ragstone •Blackstone, jackstone •sandstone • capstone • hearthstone •headstone • gemstone • whetstone •hailstone • gravestone •… Kidney Stones , Kidney stones are composed of crystals formed by chemicah that separate from the urine and that build up in the kidney. Most kidney stones pass out o…
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