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dvunkannon



Posts: 1377
Joined: June 2008

(Permalink) Posted: Aug. 05 2012,20:19   

Quote (Quack @ Aug. 05 2012,06:24)
I don't see the effect of seafloor spreading being accounted for?

As far as I can tell, ocean currents 50 million years ago would have been quite different from what they are today.

What would the effect on climate be? I'll have to get more information on that subject.

Miocene tectonics
http://www.ucmp.berkeley.edu/tertiar....ct.html
http://paleobiology.si.edu/geotime....e4.html

These pages point out that two important pathways for ocean currents closed during the Miocene as the Panama isthmus formed, and the collision of Africa and Eurasia closed the connection of the Mediterranean and the Indian Ocean. This led to more latitudinal mixing and a more even temperature distribution from equator to pole.

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Iím referring to evolution, not changes in allele frequencies. - Cornelius Hunter
Iím not an evolutionist, Iím a change in allele frequentist! - Nakashima

  
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