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| | Bibliography of Ungulates: Perissodactyla and Artiodactyla, etc. (Site not responding. Last check: ) |
 | | Artiodactyla, family Bovidae, subfamilies Bovinae to Ovibovinae (cattle, sheep, goats, chamois, serows, takin, musk-oxen, etc.). |
 | | Artiodactyla, families Bovidae, subfamilies Aepycerotinae to Tragelaphinae (pala, saiga, gazelles, oryx group, bushbucks, kudus, elands, etc.), Antilocapridae (prongbuck), and Giraffidae (giraffes and okapi). |
 | | Artiodactyla, families Cervidae (deer), Tragulidae (chevrotains), Camelidae (camels and llamas), Suidae (pigs and peccaries), and Hippopotamidae (hippopotamuses). |
| research.amnh.org /mammalogy/biblio/ungulates.html (215 words) |
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