Jay Gould was a notable paleontologist and a really famous scientific divulgation writer. Most of his books talked about evolution and showed some of the more fascinating examples.
His most important contribute to this science was the Theory of Pontuated Equilibrium, a line of thinling that, diferently from gradualism, defends that short periods where many evolution steps occour are separated by long peroid where only a few happen.
Some of his books, like the "The Panda's Thumb" or "Eight Little Piggies" are still being edited after decades.