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Re: Long-necked stegosaur coming out in Proceedings B
> "... 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.
I would have suggested a third possibility (not the same as Dann's), which is
that a longer neck would allow a better 'look-out' to scour the terrain for
approaching predators. Interestingly, this idea is implicitly contradicted by
"By contrast, the long neck of _Miragaia_ incurred a survival cost because it
presented a greater predation target for medium to large-sized
I'm not sure I understand this point, because surely a stegosaur like
_Miragaia_ would confront an approaching predator tail-first (=
'thagomizer-first') rather than head-first.