Today, Africa has five species of massive, plant-eating mammals, the so-called megaherbivores: Elephants, hippos, giraffes, and white and black rhinos. Millions of years ago, however, there was a ...

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They disproportionately affected larger-bodied species, with megaherbivores weighing over 1,000 kg particularly vulnerable. Shockingly, of the 57 known megaherbivore species from this period ...