Credits
Stille, Darlene R.  The Ice Age. Illinois: Children's Press, 1990.

Prehistoric Life. D.K. Publishing, inc. London, 1995.

Prehistoric Life. New York: Alfred A. Knopf.

<http://www.mnh.si.edu/museum/virtualtour/tour/first/IceAge/>.

<http://www.museum.state.il.us/exhibits/ice_ages/why_glaciations1.html>.

<http://www.zoomdinosaurs.com/subjects/mammals/iceage/Woollyrhinoprintout.shtml>.
 
 

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