Describe What Fossils Reveal About the Evolution of the Horse

Describe what fossils reveal about the evolution of the horse. Especially obvious is the transformation of the leg bones from having four distinct digits to that of todays.

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The ancestry of the horse family Equidae over the last 55 million years is certainly the best-known example of sustained morphological change in the fossil record fig.

. Other evidence shows they lived in wooded. The picture may be smudged in places and. They were about the size of a fox and they had four long toes.

They study the fossils of animals they find and compare them to common. Mesohippus This middle horse was about the size of a deer. - Fossil records of the horse show that it was once browsing herbivore rather than the now grazing one.

The lineage that led to modern horses Equus grew taller over time from the 04 m Hyracotherium in early Eocene to the 16. Fossils reveal that the earliest horses were about the size of a fox and had four long toes. The fossil history of the horse is one of the most complete records of change in a large mammal Many textbooks use the example of the fossil history of the horse to illustrate.

Paleozoologists have been able to piece together a more complete outline of the evolutionary lineageof the modern horse than of any other animal. The fossil record reveals how horses evolved. The fossil record of horses is seen as strong supporting evidence for the theory of evolution.

Describe what fossils reveal about the evolution of the horse. It shows that over 50 million years the horse evolved from a dog-sized creature that lived in rainforests into an. They lived in wooded marshlands.

For the evolution of the horse. Fossils have been found in US states such as Colorado and Nebraska as well as in Canada. Highly detailed fossil records have been recovered for sequences in the evolution of modern horses.

America Mostly grazers Mixed feeders Mostly browsers Old World. The evolution of the horse a mammal of the family Equidae occurred over a geologic time scale of 50 million years transforming the small dog-sized forest-dwelling Eohippus into the modern horse. They serve as objective evidence of the macroevolution of the Equidae.

They were about the size of a fox and they had four long toes. The oldest horse fossils show what the earliest horses were like. Theyre seen as the link between Eohippus-like horses and the modern horse.

Much of this evolution took place in North America. Other evidence shows they lived in wooded marshlands. His article appears in the March 18 issue of the journal Science.

Fossils reveal that the earliest horses were about the size of a fox and had four long toes. America 10 15 20 25 30 35 40 45 50 55 N. It also shows that the.

Scientists have a fairly complete fossil record. The evolution in the structure of their teeth odd-toed limbs obvious mobility of the upper lip and other aspects joins the horse to the evolutionary line of odd-toed hoofed. During the early Eocene there appeared the first ancestral horse a hoofed browsing mammal designated correctly as Hyracotherium but more commonly called Eohippus the dawn horse.

Evolution is not known to occur in a straight line but has complex. Fossils found many years later in North America which were named Eohippus or Dawn Horse have since been identified as Hyracotherium and since these fossil hunters. The oldest horse fossils show what the earliest horses were like.

Hyracotherium The horse formerly known as Eohippus. The fossil record provides snapshots of the past which when assembled illustrate a panorama of evolutionary change over the past 35 billion years. Notice the 57 million year evolution of the horse leg bones and teeth.

Merychippus An important intermediate step in equine evolution. The fossil record of horses in North America is especially rich and contains. Horse teeth frequently preserve as fossils and are readily identifiable taxonomically.

But the new horse sense is that the equine mammals are adaptable critters whose size diet and range depended.

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