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Throughout the Pleistocene Epoch, the range of the woolly rhino grew and shrank in sync with global climate. So what caused the climate -- and the range of the woolly rhino -- to cycle back and forth between such extremes?

Thanks to Julio Lacerda and Studio 252mya for the excellent Woolly Rhino illustration. You can find more of Julio's work here: https://252mya.com/gallery/julio-lacerda

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References:
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https://data.giss.nasa.gov/ar5/srorbp...
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http://biocycle.atmos.colostate.edu/s...
http://curry.eas.gatech.edu/Courses/5...
Markovic, A. "Woolly rhinoceros Coelodonta antiquitatis (Blumenbach, 1803) from Pleistocene of Serbia." Bulletin of the Natural History Museum of Belgrade (A) 47 (1998): 217-237.