Samuel Wendell Williston

Samuel Wendell Williston (July 10, 1852 – August 30, 1918) was an American educator, entomologist, and paleontologist who was the first to propose that birds developed flight cursorially (by running), rather than arboreally (by leaping from tree to tree). He was a specialist on the flies, Diptera.

He is remembered for '''Williston's law''', which states that parts in an organism, such as arthropod limbs, become reduced in number and specialized in function through evolutionary history. Provided by Wikipedia