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Re: linguistic analogy



In a message dated 96-02-09 18:37:29 EST, pharrinj@PLU.edu (Nicholas J.
Pharris) writes:

>This is a lot easier to see with respect to dinosaurs and birds if one 
>stops conceiving of dinosaurs as a group as opposed to the birds and 
>begins seeing the dinosaurs as a collection of species, some of which are 
>sauropods, some of which are ceratopians...and some of which are birds.  
>Birds merely represent a small part of the evolutionary diversity of the 
>Dinosauria.

Incidentally, this _is_ the way dinosaurs are grouped in _Mesozoic
Meanderings_ #2. But the operative idea is not to see birds as a kind of
dinosaur, but theropod dinosaurs as a kind of bird. It's a bit of a paradigm
shift, is all, one that makes more sense and explains more dinosaur features
(bipedal stance, small forelimbs, scarcity of Jurassic dromaeosaurids,
dynastic pattern of large-theropod evolution, etc.) than the other way round.