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Re: Sauropod Energetics (Peristaltic pumps for arteries?)
Would some sauropods need to maintain blood flow in order to raise their
heads long enough to take a mouthful? Surely if a diplodocid (or other
species that maintained horizontal necks most of the time) was able to
seal off the blood supply out of the neck for a few seconds to prevent
blood from draining away from the brain, then a few moments of no blood
flow to that tiny brain wouldn't be so critical?
It would mean they couldn't raise their heads for any length of time
(barring other unknown blood flow mechanisms), but it wouldn't make
quick forays into higher elevations entirely impossible.
GIS / Archaeologist http://heretichides.soffiles.com
Melbourne, Australia http://www.geocities.com/dannsdinosaurs