[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]

Re: FLIGHT VERSUS BROODING



Pterosaurs did develop greatly enlarge sterna in order to support flight
muscles, and perhaps to ventilate air-sacs. 

Bats have a completely different lung system, and a large sternum would do
them no good. Large sternal plates probably can increase respiratory capacity
in birds. 

GSPaul