Global Extinction (Permian): Gradual Doom as Bad as Abrupt

Global Extinction (Permian): Gradual Doom as Bad as Abrupt

Cheryl Dybas, and G. Hand, 2012, Global Extinction: Gradual
Doom as Bad as Abrupt. Press Release no. 12-019. National
Science Foundation.
http://www.nsf.gov/news/news_images.jsp?cntn_id=122856&org=NSF
Pictures - http://www.nsf.gov/news/news_images.jsp?cntn_id=122856&org=NSF

Global Extinction: Gradual Doom as Bad as Abrupt
Space Ref, ‎Feb. 3, 2012‎, http://www.spaceref.com/news/viewpr.html?pid=35965
and http://www.worldweatherpost.com/2012/02/03/global-extinction-gradual-doom-as-bad-as-abrupt/#.TzAzX11Gjbs

The paper is:

Algeo, T., C. M. Henderson, B. Ellwood, H. Rowe, E. Elswick,
S. Bates, T. Lyons, J. C. Hower, C. Smith, B. Maynard, L. E.
Hays, R. E. Summons, J. Fulton, and K. H. Freeman, 2012,
Evidence for a diachronous Late Permian marine crisis
from the Canadian Arctic region. First published online
February 6, 2012, doi: 10.1130/B30505.1
http://gsabulletin.gsapubs.org/content/early/2012/02/06/B30505.1.abstract

Best wishes,

Paul H.