Artiodactyla

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Bactrian camel 1.jpg Camels and llamas The even-toed ungulates (Artiodactyla) are ungulates (hoofed animals) whose weight is borne about equally by the third and fourth toes, rather than mostly or entirely by the third as in odd-toed ungulates (perissodactyls), such as horses.

The group excludes whales (Cetacea) even though DNA sequence data indicate that they share a common ancestor, making the group paraphyletic. The phylogenetically accurate group is Cetartiodactyla (from Cetacea + Artiodactyla).
There are about 220 artiodactyl species, including many that are of great nutritional, economic, and cultural importance to humans.

For more information, visit the Wikipedia entry.

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