See also:

• Science: Environment: Biodiversity  (815)
• Science: Environment: Climate Change: Impacts and Indicators: Animals  (10)
• Society: Future: Catastrophes  (36)

• Animal Extinctions in the Fossil Record: A Developmental Paradigm - Article by Vaclav Petr discussing the possible causes of extinctions.
• Extinction - A number of extinction concepts are discussed and loosely defined, followed by a survey of some important extinction and "extinction-like" events, primarily from the Phanerozoic.
• Extinctions: Cycles of Life and Death Through Time - Covers patterns and periodicity of extinction, with discussions of major mass extinctions and minor extinction events.
• The Late Devonian Mass Extinction - A professional technical paper discussing whether the Late Devonian (Frasnian-Famennian) mass extinction was initiated by an extraterrestrial impact or an earth-bound event. [PDF]
• Mass Extinction - A mathematical model for mass extinction.
• Our Nemesis? - Article on a paper by David Raup and John Sepkoski, two respected paleontologists, making the remarkable claim that great catastrophes occur on the Earth every 26 million years,