Ordovician Mass Extinction Linked to Ancient Climate Change

Caltech Geobiologists Uncover Links between 
Ancient Climate Change and Mass Extinction,
Caltech Media Relations, 
http://media.caltech.edu/press_releases/13400

Mass Extinction Linked to Ancient Climate Change, 
New Details Reveal, ScienceDaily, 

http://www.sciencedaily.com/releases/2011/01/110127141703.htm

Finnegan, S., K. Bergmann, J. M. Eiler, D. S. 
Jones, D. A. Fike, I. Eisenman, N. C. Hughes, 
A. K. Tripati, and W. W. Fischer, 2011, The 
Magnitude and Duration of Late Ordovician–Early 
Silurian Glaciation. Science. Published Online 
27 January 2011, DOI: 10.1126/science.1200803
http://www.sciencemag.org/content/early/2011/01/26/science.1200803

Yours,

Paul H.