Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/DonateEONS Natural history is full of living things that were long thought to have gone extinct only to show up again, alive and well. Paleontologists have a word for these kinds of organisms: They call them Lazarus taxa. Go to http://squarespace.com/eons and use code “EONS” for 10% off your first order. Special thanks to Nobumichi Tamura for allowing us to use his paleoart. Check out his portfolio here: http://spinops.blogspot.com Thanks to Andrey Atuchin, Lucas Lima, Franz Anthony and Studio 252mya for their illustrations. You can find more of their work here: Andrey Atuchin: https://www.facebook.com/AndreyAtuchinStudio/ Lucas Lima: https://252mya.com/gallery/lucas-lima Franz Anthony: https://252mya.com/gallery/franz-anthony Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios Want to follow Eons elsewhere on the internet? Facebook - https://www.facebook.com/eonsshow Twitter - https://twitter.com/eonsshow Instagram - https://www.instagram.com/eonsshow/