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Re: Age of Oligocene (post-KT, sorry)

ornstn@rogers.com (Ronald Orenstein) asks:

<< Can someone help me here?  What is the best estimate of the beginning of 
the Oligocene period?  I have found timelines stating anywhere from 38 to 
34 mya. >>

       According to the South Dakota School of Mines and Tech, it's 34 mya. 
This is about 10 years old, however. While us dinosaur types weren't paying 
attention, the Chadron Formation with all those wonderful Titanotheres was 
demoted to the Eocene. DV