The diagram presnts data of how thye houre envolved over a span of 40 million year.
Overall, the early oedipus species went through four stages of development with significant changes in their foot structure and body size, eventually transferring into the modern horse we know today.
Around the 40 million year, the hourse structure is changed and display the leg, neck, tail and toe. 40 million years ago the houre body is qute a smollar then modern horses. The eohippus structure not same, such as the foot, the foot size is different and the foots toes are elongat. Next 10 million year, the hourse referred to as the mesohoppus charactized a reduced number of toe to three, the larger middle toes among the two remaining and a pare mane along the topof its neck. The subsequently, the feautres the houre structure was similar to the merychuppus, which appeared 15 million years. Finally the modrn-days the horse fused to become a hoof and the leg joint was angled
Additionally, the echippus horse demision was much smaller, about half and height and length of the present-day horse. Over the time horse body size gradually increased in the mesohippus and merychuppus, eventually achieving the size of todays horse.