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Re: MR's comment on dino vision

> [ dinosaurs probably had better color vision
>   than most mammals and may have been sensitive to optical polarization
>   as well.  The latter would be particularly helpful in allowing an
>   animal to see under the surface of the water because the polarization
>   of reflected light would be different from the polarization of light
>   transmitted from under the water's surface.  -- MR ]

How can we know *anything* about dinosaurs' color vision &/or
sensitivity to optical polarization?

[Mickey will be away for the next week and will not see this until he gets
back - Chris]