Just this week, the discovery of the 300-million year old Gerobatrachus hottoni ("Hotton's elder frog") confirmed the previously contentious inference that modern frogs and salamanders evolved from one group of ancient primitive amphibians. The dispute arose because of a lack of transitional forms; but, like so many "missing links," this newly discovered fossil sealed the gap. The fossil record is one of the strongest lines of evidence for evolution, yet it continues to come under attack by present-day creationists and advocates of Intelligent Design. This week on Skepticality, Swoopy talks with eminent paleontologist and professor of geology Donald R. Prothero about his bestselling Evolution: What the Fossils Say and Why it Matters. This comprehensive book explores not only the rich mosaic of fossil discoveries and transitional forms, but also the very nature of science—and the "monkey business of creationism."