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Ave Maria



Hasn't the class Aves been subsumed into Reptilia, thereby rendering all birds as dinosauria? Or is this still just hypothesis?

Peter Markmann
Australia

PS: Cladistically, I'd put Beck before Clapton and Page. BTW, they're all Yardbirds, that are currently considered dinosaurs...!


On Monday, September 8, 2003, at 06:45 AM, Mike Taylor wrote:

From: Mike Taylor <mike@indexdata.com>
Pretty much all you _can_ say with any certainty is that
_Archaeopteryx_ is a bird -- because it's one by definition.  The
standard definiton of Aves is {_Archaeopteryx_ + Neornithes}, that is,
the most recent common ancestor of _Archaeopteryx_ and common birds,
plus all its descendants.  So (asusming you use this definition -- not
everyone does), Archie is a bird; but what else is?  It depends on how
the phylogeny falls out.  For example, if it looks like this:

        +-- Carnosaurs
        +-- _Deinonychus_
        +-- _Archaeopteryx_
        +-- Modern birds

Then _Deinonychus_ is not a bird; but if it looks like this:

        +-- Carnosaurs
        +-- _Archaeopteryx_
        +-- _Deinonychus_
        +-- Modern birds

Then _Deinonychus_ _is_ a bird.