[Taxacom] Paraphyletic species: Crocodylus niloticus

[Michael Heads]

Hi Ken and Taxacomers,


 
Why does everyone always assume that a basal paraphyletic grade in one area represents a center of origin?


 
Michael Heads


Wellington, New Zealand.

My papers on biogeography are at: http://tiny.cc/RiUE0

--- On Sat, 14/5/11, Kenneth Kinman <kennethkinman at webtv.net> wrote:


From: Kenneth Kinman <kennethkinman at webtv.net>
Subject: [Taxacom] Paraphyletic species: Crocodylus niloticus
To: taxacom at mailman.nhm.ku.edu
Received: Saturday, 14 May, 2011, 8:02 AM


Dear All,      
       A recent paper indicates that Crocodylus niloticus is
paraphyletic with respect to the clade of Crocodylus species in the
Americas.  Not only a great example of a paraphyletic species, but also
transoceanic dispersal as well.  Link to news story is given below.
               ----------Ken                     

http://www.newscientist.com/article/dn20464-crocodiles-swam-the-atlantic-to-reach-america.html      


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