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Re: Definitions

In a message dated 7/24/00 12:16:39 PM EST, tmk@dinosauricon.com writes:

<< Alvarezsauria have keeled breastbones, but they're not Carinatae. >>

Keeled breastbones may go back quite a way in theropods. I recall Dan Chure 
displaying the keeled breastbone of his formerly headless Dinosaur National 
Monument allosaurid at a fairly recent SVP annual meeting.