S1E5 J13 Cretaceous Dinosaurs Cretaceous, crystal palace, deep time, dinosaurs, geology, m4, Mantell Listen Junction 13 of the M4 traveling west. This is the second episode from the Cretaceous Period. Audio Playerhttps://www.richardtreves.com/podcast-player/481/s1e5-j13-cretaceous-dinosaurs.mp300:0000:0000:00Use Up/Down Arrow keys to increase or decrease volume.