Ray and Dave talk with Smithsonian paleontologist Hans-Dieter Sues about the origins of reptiles, the rise of dinosaurs, and a lifetime unearthing Triassic treasures from around the world.

Ray and Dave explore the mind of paleo artist Doug Henderson exploring his techniques, inspirations, and the breathtaking body of work that re-imagines ancient worlds.

Ray Troll shares morning coffee in his Ketchikan lounge room with Dr. Karin Claeson, exploring fish evolution, anatomy, development, and variability across deep time.

Ray and Dave learn all about Brachiopods, one of the hardy survivors of the Big Five extinctions, with Susan Butts, Director of Collections and Research at the famous Yale Peabody Museum.

Dave goes out on a dig at the famous Egg Mountain site in western Montana with Dr. John Scannella, curator of paleontology at the Museum of the Rockies.

Ray and Dave explore jaws, fins and fossil fish while tracing the deep origins of vertebrate life with Dr. Michael Coates, Vertebrate Paleontologist and Chair of Organismal Biology and Anatomy Professor at the University of Chicago.

Ray and Dave talk Sauropods, Smilodons, and Spielberg with artist and paleo visionary Mark Hallett, whose decades of work bring ancient worlds to life.

Ray and Dave explore the history of all things Elephantidae, including Mammoths, Mastodons, and Gomphotheres, with Advait Jukar, delving into their shovels, tusks, and trunks.

Ray and Dave go rock hunting through billions of years of Earth's history with Marcia Bjornerud, a structural geologist, inspirational author, and Professor of Geosciences at Lawrence University in Wisconsin.

Ray and Dave talk about the amazing fossils and strata found in Badlands National Park, South Dakota, where park ranger Mattison Shreero explains how it all got there and why she absolutely loves her job.