jbstedman Posted July 15, 2008 Share Posted July 15, 2008 Thought this piece from ScienceDaily about the findings from a decade-long effort to build a database on marine fossils might be of interest. Fewer mass extinctions show up and recovery seems quite rapid. Besides fossils, I collect roadcuts, Stream beds, Winter beaches: Places of pilgrimage. Jasper Burns, Fossil Dreams Link to comment Share on other sites More sharing options...
Auspex Posted July 15, 2008 Share Posted July 15, 2008 That's very interesting. I'd like to see the data curve when taken at the family level; this is the approach Steven J. Gould proposed as the best measure of adaptive radiation and/or collapse. "There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant “Try to learn something about everything and everything about something.” - Thomas Henry Huxley >Paleontology is an evolving science. >May your wonders never cease! Link to comment Share on other sites More sharing options...
Guest solius symbiosus Posted July 15, 2008 Share Posted July 15, 2008 The article is very vague. I would love to read the original paper(guess it is time for a trip to the library). He claims 3 instead of 5 major events, but 3 of those events have similar characteristics. O/S- 25% of families; 60% of genera Late D-22% of families; 57% of genera Late Tr-22% of families; 52% of genera I wonder which one of these 3 he is referring to, and why he chose to eliminate the other two. Maybe he has combined the O/S and Late D, but that doesn't make a lot of sense. Anyone have access to the article in Science. Link to comment Share on other sites More sharing options...
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