Joyce -
The "Animal Diversity Web" is a very nice web resource hosted by the
University of Michigan. The site is not restricted to mammals, but they
probably have more info and resources for the mammalian group than any other in
the kingdom. ADW is continually growing and improving in quality - I use
it often in my teaching and recommend it to others. Hope this helps!
http://animaldiversity.ummz.umich.edu/">http://animaldiversity.ummz.umich
.edu/
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