Why are dolphins considered Ungulates?

Answer 1

Dolphins are considered ungulates because they shared a common ancestor with artiodactyls roughly 60 million years ago.

Dolphins are considered ungulates because they are closely related to artiodactyls (even-toed ungulates). Cetaceans evolved from an even-toed ungulate ancestor. Some have argued that the mammalian order artiodactyls needs to be combined with cetaceans to form the order, Cetartiodactyla, reflecting the close relationship between these two groups. This change is widely accepted.

Cetaceans are actually more closely related to even-toed ungulates than odd-toes ungulates (horses, rhinos, zebras) are.

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Answer 2

Penelope Adams

Ungulates are hooved mammals like horses, cows, and deer; dolphins are mammals that belong to the order Cetacea, which also includes whales and porpoises.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.