Rise of marine predators reshaped ocean life as dramatically as mass extinctions – Research News

Episode 85 – The Ordovician Mass Extinction – The Common Descent

Mysteries of Earth's ancient mass extinction event revealed

Ocean and Climate Change - The Ocean Foundation

Fishes, Free Full-Text

Six Extinctions, Viewed Through the Museum's Collections

Earth's five mass extinction events

Mass extinctions: The microbes strike back

Shark News, Issue 07

Humanity driving 'unprecedented' marine extinction