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In science class the two units that I enjoyed the most are Microbiomes, and Natural Selection.
In Microbiome unit, I learned about cells and their organells. Each cell's organell has a job that is crucial for the whole functioning of the cell. For example, Ribosome, is in charge of producing proteins.
The Evolution of the Horse
The project is finding an animal and going back to its earliest form and making a timeline and how I think that the horse will evolve in the futuer
The earliest form of the horse is the hyracotherium. How it got that name I have no idea and so the horse is about dog-sized. The Hyracotherium lived 55 million years ago but surprisingly it looked more like a dog than the modern horse, the Hyracotherium originated in northern Kazakhstan this horse is also called eohippus.
The next evolution, the Mesohippus, appeared in the Oligocene epoch about 45 million years ago. The mesohippus is a little bit bigger with no hooves and one less toe. During the time the Mesohippus was alive it was more like a small horse than a dog.
35 million years ago the Miohipus was the current genus at that time and also the "horse" Some of the more noticeable distinct features have been adapted to the Mesohippus that look more like the modern horse like a slightly longer skull also the facial fossa, or indent above the eye, was deeper and more expanded.
About 17 million years ago the Merychippus joined the equine at about 10 hands tall or 40 tall and was the largest "horse" yet the muzzle is becoming elongated the jaw is further down the eyes are more to the side of its head, so the large teeth roots can come in to adapt to the grassy plains and almost just like the modern horse.
5 million years ago came the Pliohippus the first one-toed, hooved horse that developed the adaptation to be very fast so it can escape predators the hoof evolved from the continual over-development of the middle toe during this time. The teeth and limb forms were very close to the modern-day horse.
In this modern day, the Equus is the genus of all modern equines the first one up to date is about 13.5 hands tall or a pony with a kind of "horse" like body with a rigid spine, long neck, legs, and nose, and fused leg bones with no rotation the Equus still has the one toe with side ligaments that prevent twisting of the hoof, making their legs into sturdy for riding and working use.
One last thing is that the way I think the modern horse is going to evolve more specifically the thoroughbred is going to adapt to the racing condition.
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