Adam Sedgwick (March 22nd, 1785-January 27, 1873) was one of the founders of modern geology. He proposed the Devonian period of the geological timescale and later the Cambrian period. The latter proposal was based on work which he did on Welsh rock strata. Sedgwick was born in Dent, Yorkshire, the third child of an Anglican vicar. He was educated at Sedbergh School and Trinity College, Cambridge. Wikipedia
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