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SUMMARY:The Red Queen\, Mars\, living and dying fast and young: macroevolu
 tion in graptoloids - James Crampton\, Victoria University of Wellington
DTSTART:20241015T110000Z
DTEND:20241015T120000Z
UID:TALK220477@talks.cam.ac.uk
CONTACT:Dr Rachael Rhodes
DESCRIPTION:This talk will summarize a number of recent studies\, and ongo
 ing research\, based on a remarkable timeseries of evolution and extinctio
 n in the graptoloids. This group of organisms was the major component of t
 he macrozooplankton during the Ordovician and Silurian periods\, between a
 pproximately 480 and 420 million years ago. The data reveal evidence for M
 ilankovitch pacing and diversity dependence of evolution and extinction ra
 tes\, the dominance of very short-lived\, "ephemeral" species\, and both d
 istinction and continuity between times of "background" and mass extinctio
 n.  
LOCATION:Department of Earth Sciences\, Tilley Lecture Theatre
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