The diagrams below show the development of the horse over a period of 40 million years. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The pictures depict the evolution of the horse during the 40 million years.

Overall

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, there are 4 main stages of the development of both horse's shape and hoof, starting with

Eohippus

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the Eohippus

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type, and

finally

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becoming the normal animal in the present day.

Initially

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, the creature namely Eohippus, which lived approximately 40,000,000 years ago, used to possess a small body with some spots on its skin. The legs of it differed noticeably as well by having fingers on them. The following phase illustrates the artificially-made picture of Mesohippus, which

inhabites

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inhabited

inhabits

inhibits

300,000 centuries ago. Even though

,

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it did not vary significantly, the physical appearance experienced a change by increasing in height and size

,

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and decreasing in the number of toes. Merychippus,

on the other hand

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, acquired a more or less similar external structure to the modern one. 15,000,000 years ago, the development was noticeable in a higher physique and hoof-like legs.

Last

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, after many phases of prehistoric times, we can ride a modern horse with well-adapted hooves for running and endurance now.