Final answer:
The fossil record provides evidence of the modern whale's evolution from the Anthracotheres through transitional fossils like Ambulocetus and Pakicetus.
Step-by-step explanation:
The fossil record provides evidence that the modern whale evolved from the Anthracotheres through the presence of transitional fossils. These fossils show the gradual changes in the anatomy of the species over time. For example, the Ambulocetus is a known transitional fossil that exhibits both terrestrial and aquatic adaptations, similar to what is seen in modern whales. Additionally, the Pakicetus is another important transitional fossil that shows the presence of inner ear structures that are common to both whales and Anthracotheres.
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