Dinosaur-dispersed cycads
Harold Koopowitz (Fri, 25 Nov 2011 06:35:03 PST)
Lou:
The mammals have been around a long long time, probably the whole
time that there were dinosaurs. No reason why some dinosaurs could
not have dispersed some cycads but I have never come across this
being addressed. It would have to be a big bird to disperse cycad
seed and most of the giant birds are after 65 mya.
Harold
At 05:54 PM 11/24/2011, you wrote:
Does anyone know of evidence that cycads were dispersed by
dinosaurs? I suppose it could be true, but some birds and small
mammals co-existed with the later dinosaurs, and could have
dispersed cycads prior to 65 Mya. If there really was a drop in
cycad diversity when the dinosaurs became extinct, as the article
says, this could very well have been an effect of the same
environmental changes (meteors, etc) that wiped out the dinosaurs.
Lou
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