Gorgon: Paleontology, Obsession, and the Greatest Catastrophe in Earth's History by Peter Ward
When Life Nearly Died: The Greatest Mass Extinction of All Time by Michael Benton
Otherlands [Chapter 10] by Thomas Halliday
Walking with Monsters Episode 3: Clash of Titans, produced by the BBC Natural History Unit
The Permian Extinction—When Life Nearly Came to an End (National Geographic)
The 'Great Dying' Nearly Erased Life On Earth. Scientists See Similarities To Today (NPR)