fossil record
  • Sheep-Sized Hippos Moved to Africa Even Before Lions and Giraffes

    Sheep-Sized Hippos Moved to Africa Even Before Lions and Giraffes

    Researchers have now determined that hippos were likely some of the first large animals to migrate from Asia to Africa, swimming from one continent to the other roughly 35 million years ago. However, they certainly weren't the semi-aquatic giants they are today. Fossil evidence indicates that ancient hippos were no larger than modern sheep.
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