Complete the "Origin of whales" tree. (This one is really hard so you can look at the next page to find the answer, but try completing it by yourself first) According to the tree, what does dorudons, blue whales, and killer whales have in common that the other species do not?
Tail flukes
Underwater nursing
Ability to shoot rainbows out of their eyes
Living in seawater
Ambulocetus
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Pakicetus
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|----------------------Remingtonocetidae
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Dorudon Basilosaurus
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Blue whales Killer whales