The swamps of the Late Carboniferous Period teemed with giant insects, but it’s time for the amniotes - the ancestors of all reptiles, birds, and mammals to come - to earn the title of Fully Terrestrial Vertebrates. It’s getting more crowded on land - could you survive? -- Eons is a production of Complexly for PBS Digital Studios. If you'd like to support the show, head over to Patreon and pledge for some cool rewards! Want to follow Eons elsewhere on the internet? Facebook YouTube Twitter Instagram