Georges-Louis Leclerc , Comte de Buffon ( French pronunciation : ( ʒɔʁʒ lwi ləklɛʁ kɔ̃t də byfɔ̃ ) ; 7 September 1707 - 16 April 1788 ) was a French naturalist , mathematician , cosmologist , and encyclopedic author .
Georges-Louis Leclerc , Comte de Buffon ( 7 September 1707 - 16 April 1788 ) , usually called Buffon , was a French naturalist .