Original: George Ledyard Stebbins, Jr. (January 6, 1906 - January 19, 2000) was an American botanist and geneticist who is widely regarded as one of the leading evolutionary biologists of the 20th century.
Simplified: George Ledyard Stebbins, Jr (6 January 1906 - 19 January 2000) was an American botanist and geneticist who was one of the leading evolutionary biologists of the 20th century.