- CREO's mission is to foster an improved understanding of species' extinctions that have occurred in recent times.creo.amnh.org
- An overview of extinction, and information about individual species that have become extinct.www.bagheera.com/inthewild/extinct.htm
- Synopsis.www.lassp.cornell.edu/newmme/science/extinction.html
- A brief discussion of mass extinctions, and information about the Vendian Mass Extinction and Mass Extinctions of the Phanerozoic. (Precambrian, Cambrian, Ordovician, Devonian, Permian, End-Cretaceous, and Holocene.park.org/Canada/Museum/extinction/massextinc.html
- Extinction You are visitor number since 18 June 1999 These are lecture notes from an experimental non-majors biology class taught in 1995 by Bruce Walsh, University of Arizona. Other lectures of potential interest: Origins of life Cosmic impacts and life on Earth Genetics class lecture notes Extinction 99.9% of all species have become extinct Without extinction, we would not be here Mass ...nitro.biosci.arizona.edu/courses/EEB105/lectures/extinction/extinction.html