 Nicolas Steno

Nicolas Steno (; Latinized to "Nicolaus Steno" or "Nicolaus Stenonius"; 1 January 1638 – 25 November 1686 ) was a Danish scientist, a pioneer in both anatomy and geology who became a Catholic bishop in his later years.Steno was trained in the classical texts on science; however, by 1659 he seriously questioned accepted knowledge of the natural world.