At 03:20 PM 9/9/95 -0400, Tompaleo@aol.com wrote: >Until then, here's some other refs to chew on ;-) See also: Erwin, Douglas H. 1993. _The Great Paleozoic Crisis: Life and Death in the Permian_. New York: Columbia University Press. xii + 327 pages. -= Tuck =-