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  1. The earliest fossil form in the phylogeny of Horse is
    1. Merychippus
    2. Mesohippus
    3. Eohippus
    4. Equus
Correct Option: C

Evolutionary history of horse was described by O.C. Marsh, 1879. Origin of horse took place in Eocene period and first fossil of horse was Eohippus found in North America.
Evolutionary trend of Horse:



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