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Re: Latest K dinosaurian diversity trends
most people would only consider species as "real" (remember that a
genus is just another clade)
Under some species concepts, species are necessarily clades, too.
As I always say: as of February 2008, there are 147 species concepts out
there; depending on the species concept, there are from 101 to 249
endemic bird species in Mexico; there's nothing all species concepts
have in common except the _word_ "species".
To measure biodiversity, use the Phylogenetic Diversity Index (Faith