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| | San Diego Zoo's Got Questions?: Extinct animals |
 | | According to the International Union for Conservation of Nature and Natural Resources' (IUCN) 2003 Red List of Threatened Species, there are 717 species and subspecies of animals that have been listed as extinct in the last 500 years. |
 | | This list is put together from information that scientists and researchers gather, but it is hard to keep track of all the possible animals in the world. |
 | | The IUCN extinct list includes 104 mammals, 129 birds, 22 reptiles, 7 amphibians, 82 fish, 263 snails, 34 bivalves (like clams), 69 insects, 7 crustaceans, and 1 type of flatworm. |
| www.sandiegozoo.org /animalbytes/gotq_extinct.html (322 words) |
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