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Re: Brooding over dinos



In a message dated 98-08-17 13:28:13 EDT, TomHopp@aol.com writes:

<< highly engineered for BROODING >>

"Highly engineered"? All you need, basically, is some kind of cover. Whatever
insulatory or flight-related aerodynamic structures that were available would
do. For example, it is entirely possible that pterosaurs used their
membraneous wings for brooding their eggs. No need for specialized flight
feathers here. Would you say pterosaur wings evolved for brooding, and were
then exapted for flight?