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Marsupials see colors

This is interesting... This would appear to knock more
holed in the hypothesis that black and white vision is
predominant in mammals because they started out as
nocturnal animals in order to avoid competition with
dinosaurs (who were hypothesized to be primarily
diurnal, although that might not be true, either.)

The apparent ability to see in the UV spectrum is
interesting... Any thoughts as to what advantage this
might serve?


Guy Leahy