I am trying to track down some pretty basic information below.  I am
trying to put together a simple figure in a paper I am writing, but I
can't find the % extinction of vertebrates or number of verts that
became extinct vs survived until about 500 years ago.  Basically, the
figure has data points for a histogram going back to the Ordovician,
but of all the data points I need, I can't find % extinction in
prehistory (10,000 ybp to 500 ybp) or for the Pleistocene.  If anyone
can point me to a good source, it would be very helpful.  I have been
searching for this just to make a figure to support the text for a
week, and I'm starting to get crabby! :)  My Gut feeling is that it is
probably in one of the papers behind paywalls for which I would have
to pay $$ for.  i don't mind paying, I just don't want to buy every
paper behind a paywall until I stumble on the data I am trying to
find!!!! :)  Any help would be GREATLY appreciated

#1) First, is anyone familiar with Kurten B, Anderson E. 1980.
Pleistocene Mammals of North America. Columbia U Pr. 422p.  I am
curious if it is still considered current.

#2) I am trying to track down extinction magnitude of non-mammalian
vertebrates during the Pleistocene and from 10,000 ybp to 500 ybp.
The information I have is mostly from JA Holman's work, and it
indicates that all amphibians made it through to today, and that all
reptiles except for a series of tortoises survived to present.  I am
having difficulty getting the information from
other classes of Vertebrata (birds, Chondrichthyes, Osteichthyes,
lampreys & hagfishes).  I do have a little info on birds, but I'm not
confident it is accurate.

#3) Even if I can just find the % extinction of vertebrates between
10,000 ybp to now or 10,000 ybp to 500 ybp it woudl be hugely helpful.
But, I'm hoping to get it for the Pleistocene too.

Thank you for any help you can pass my way!
Malcolm

-- 
Malcolm L. McCallum, PHD, REP
Department of Environmental Studies
University of Illinois at Springfield

Managing Editor,
Herpetological Conservation and Biology

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