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   Nannippus
   Nannippus is an extinct genus of horse endemic to North America during the Miocene through Pliocene, ~13.3—3.3 Ma, living approximately {Mya|13.3-2.2|million years}. Nannippus lived as far south as Central Mexico (N. peninsulatus) to as far north as Canada (N. lenticularis), to California in the ...
   Found op http://en.wikipedia.org/wiki/Nannippus
   
   

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