Fig. 3From: Evolutionary Transitions in the Fossil Record of Terrestrial Hoofed MammalsA modern view of horse evolution, emphasizing the bushy branching nature of their history, as many more fossils have been found and new species named. However, the overall trends toward higher-crowned teeth (shown by the symbols for browsing leaves or grazing grasses), larger size, longer limbs, and reduction of side toes are still true (after Prothero 1994)Back to article page