Compare the teeth of modern horses to fossilized teeth from ancient horses.
The sharper points associated with a diet of leaves replaced the cusps of a fruit-eater in the horses' teeth some 33 million years ago, causing a noticeable change. The rain forests were vanished at this point, and the weather had become chilly.
According to Mihlbachler, "the signal we are receiving in the shift in the food of horses is extremely compatible with what we understand about how the environment was changing.
The teeth of certain prehistoric horses, which were most closely linked to contemporary horses, underwent a significant alteration around 18 million years ago.
Their teeth developed a more intricate surface that was more adapted for chewing difficult vegetation, especially grasses, which contain silica particles that can damage teeth. The teeth also started to get longer.
Here is another question with an answer similar to this about evolution: brainly.com/question/12644220
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