Have you ever closely inspected the landscape when you're touring the National Park System, particularly in the West? You never know what you might find.

Back in 2010 a 7-year-old attending a Junior Ranger program at Badlands National Park spied a partially exposed fossil that turned out to be the skull of a 32-million-year-old saber-toothed cat.

If you've ever visited Petrified Forest National Park you've no doubt marveled over the colorful fossilized tree trunks. There are also fossilized trees on the northern range of Yellowstone National Park, but nowhere near as colorful.

For this week's episode we've invited Vince Santucci, the National Park Service's senior paleontologist, to discuss the many fossil resources that exist across the National Park System, from coast to coast and north to south.