Quoting MICHAEL MURPHY <4mjmu@rogers.com>:
Cool Picture here:
http://dsc.discovery.com/news/2009/02/25/dinosaur-zoom.html
To quote the above article:
"... two scenarios are possible."
"The first is that the long neck might have permitted it to browse
for foliage at a height not
frequented by other prehistoric animals. The second is that males
and females might have found
the trait appealing, so it evolved due to sexual selection. "
There's a third possibility, and it's been suggested for sauropods
as well. If the tail was the main
means of defense, then a longer tail may have given it a greater
'arc of thagomization'. The
elongation of the neck may have just come along for the ride as a
counter-balancing measure.
--
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Dann Pigdon
GIS / Archaeologist http://geo_cities.com/dannsdinosaurs
Melbourne, Australia http://heretichides.soffiles.com
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