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Another Branch of the Family



From a review by W. Ford Doolittle of the book by Colin Tudge, Sunday (6/18) New York Times Book Review Section:
 Either we call birds reptiles or
          we cannot have such a group as the class Reptilia, because it spawned
          creatures (in fact two whole classes, Aves and Mammalia) that we don't
          call reptiles. Disputes about this still rage in the academic
          literature because there are still those who hold that similarity, if
          strong enough, should trump relationship, that classification is not
          just about genealogy.
          Tudge explicates the cladist doctrine quite clearly, while personally
          adopting an intermediate position (suggesting that we simultaneously
          recognize a Reptilia that includes mammals and birds and a
          ''Reptilia'' that doesn't, and would be what most people mean by
          reptiles). This is the kind of casual ambiguity with which most of us
          are already comfortable -- without the typographical trickery. I doubt
          that Tudge's terminology will be embraced by professionals.
and
 
It is the application of molecular
          approaches, as much as cladism, that has transformed the
          classification business. Modern museums of natural history spend as
          much on DNA sequencing machines as on fossils, and people who can
          recognize animals and plants by sight alone are, sadly, ever rarer and
          less in demand.
 
I'd be sorry to think the second statement is true.  Should I?