The diagrams below show the development of the horse over a period of 40 million years.

In the given diagram, we can clearly see the development of horses, paying special attention to their foot structure. Looking from an

overall

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perspective, it is crystal clear that the appearance of horses and especially their feet completely changed over the span of 40 million years. The prehistoric horse from 40 million years ago was much smaller in size compared to more modern ones;

in addition

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, Eohippus had no hair on their neck and even had 5 fingers on their feet. The next stage of evolution resulted in the Mesohippus, which was much bigger than the earlier Eohippus,

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, the hair on their neck started to grow out. Meryhippus is the closest type to the modern horse, as it already

had

Wrong verb form

has

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beautiful long hair and has bulked up some weight.

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, modern-day horses are much bigger,

much

Correct word choice

and much

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taller, and the most important difference is them having hooves

instead

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of fingers.