The theory of evolution says that the organism has evolved from a common ancestor which is "descent with modification".
In the above given question, the new fossil structures was found and the anatomical structures were compared with that of Sloth and the Horses.
What are fossils?
Fossils are defined as the preserved remains of ancient organisms. .
The similarities in these above three species show that they were evolved from the common ancestor but the differences is that in the number of teeth and bones in toes with the sloth show that the fossil and the sloth are not closely related.
The new fossil is more closely species related to the horses because the three anatomical traits (characteristics) are more similar to the anatomical traits of the horses. This can show that the species are more closely related.
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