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Oligocene epoch

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Noun1.Oligocene epoch - from 40 million to 25 million years agoOligocene epoch - from 40 million to 25 million years ago; appearance of sabertoothed cats
Tertiary, Tertiary period - from 63 million to 2 million years ago


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In her research, Katz developed important theories on one of the most recent and dramatic climate change events that have occurred in recent geologic history - the transition from the greenhouse climate of the Eocene epoch to the "icehouse" or glacial conditions of the Oligocene epoch approximately 33.
The rodent belongs to a family of creatures called dinomyids that appeared in parts of South America in the Oligocene epoch more than 20 million years ago and rapidly populated the regions that are now Argentina, Brazil, Venezuela and Colombia.
The problem is that we have absolutelyno evidence whatsoever that there were regional ice caps anywhere in the world before the late Oligocene epoch [about 25 million years ago],' says Andrew D.
 
 
 
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