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Tetrapod references on wikipedia
Tetrapod
Tetrapods (Greek τετραποδη tetrapoda, Latin quadruped, "four-footed") are vertebrate animals having four feet, legs or leglike appendages. Amphibians, reptiles, dinosaurs/birds, and mammals are all tetrapods, and even the limbless snakes are tetrapods by descent. The earliest tetrapods radiated from the Sarcopterygii, or lobe-finned fish, evolving into air-breathing amphibians in the Devonian period.
Tetrapods (Greek τετραποδη tetrapoda, Latin quadruped, "four-footed") are vertebrate animals having four feet, legs or leglike appendages. Amphibians, reptiles, dinosaurs/birds, and mammals are all tetrapods, and even the limbless snakes are tetrapods by descent. The earliest tetrapods radiated from the Sarcopterygii, or lobe-finned fish, evolving into air-breathing amphibians in the Devonian period.
| Description | |||
 Berkeley.edu | University of California, Berkeley | ||
| Devoniantimes.org | Devonian Times - Front Page | ||
| Livescience.com | LiveScience | Science, Technology, Health & Environmental News | ||
| Nationalgeographic.com | National Geographic - Inspiring People to Care About the Planet | ||
| Nature.com | Nature Publishing Group : science journals, jobs, and information | ||
| Nih.gov | National Institutes of Health (NIH) - Home Page | ||
| Origins.tv | Origins.tv | ||
| Palaeos.com | Palaeos | ||
| Reuters.com | Reuters.com | ||
| Sciam.com | Science News, Articles and Information | Scientific American | ||
| Sciencedaily.com | Science Daily: News & Articles in Science, Health, Environment & Technology | ||
| Softpedia.com | Free Downloads Encyclopedia - Softpedia | ||
| Tolweb.org | Tree of Life Web Project | ||
| Uwnews.org | uwnews.org | University of Washington News and Information | ||
