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Re: Campbell's even crazier than a MANIAC? (archeopteryx

Do you define "all" as all Aves, or all Neornithes? That's an important 
question because we don't know why other Aves did not survive past the end of 
the Cretaceous. A difference in flight capabilities might explain the 
difference, or perhaps the differences lie in other capabilities which are hard 
to spot in the fossil record, such as metabolism. 

At 8:02 PM -0400 9/24/08, tholtz@geol.umd.edu wrote:
>> Perhaps all the Cretaceous birds were not better flyers than
>> tinamous and chickens??.
>I think that this is really closer to the truth than most people consider
>at the present...

Jeff Hecht, science & technology writer
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