This giant salamanderlike creature lived 40 million years before dinosaurs The Associated PressGiant stem tetrapod was apex predator in Gondwanan late Palaeozoic ice age Nature.com280 million-year-old swamp monster with 'big, flat toilet seat-shaped head' discovered in Namibia Livescience.comFangs and toilet seat-shaped head: giant salamander-like fossil found in Namibia The GuardianThis Bigheaded Fossil Turned Up in a Place No One Expected to Find It The New York Times