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Re: Long-necked stegosaur, head tail mimicry?
Now, a sauropod is usually bigger, and may well make sense to do
that way. Correlation with size and long necks?Â<<<
Quite the opposite; locomotion scales favorably (i.e. becomes cheaper)
as you grow larger. The idea that sauropod necks evolved to prevent
them from having to walk during grazing has to rate as one of the most
ludicrous explanations to ever enter the paleo literature (seriously,
it's the energetics equivalent of saying the long necks were snorkels
that let sauropods rest comfortably under 30 feet of water).
Especially when considering how expensive long necks are to maintain
and breath through.
That's not to say that sauropod may not have grazed, but the
long-necked species acquired their necks for entirely different
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From: Richard W. Travsky <firstname.lastname@example.org>
Sent: Wed, 11 Mar 2009 9:10 am
Subject: Re: Long-necked stegosaur, head tail mimicry?
On Sun, 8 Mar 2009, David Marjanovic wrote:Â
We assume, like sauropods,Â
that stegosaurs are relatively slow moving, and the phraseÂ
is being freely used, so maybe, just maybe, this particular
just that. Not moving very much but being able to cover a lot
ground whilst eating, moving the long neck in an arc, maximising theÂ
intake without moving very much. Just a thought.Â
But is it even the case that holding the neck far out and moving it
costs less energy than walking a step?Â
There are millions of four legged animals on the planet today that
don't have long necks, and take steps to cover ground. So I tend to
why they'd adopt that sort of feeding strategy.Â
Now, a sauropod is usually bigger, and may well make sense to do things
that way. Correlation with size and long necks?Â