Tetrapod
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The superclass Tetrapoda (Auncient Greek τετραπόδηs tetrapodēs, "fower-fittit"), or the tetrapods, comprises the first fower-limbed vertebrates an thair descendants, includin the livin an extinct amphibians, reptiles, birds, an mammals.
| Tetrapods | |
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| Representatives o the fower classes of extant tetrapods, (clockwise frae upper left): a frog (an amphibian), a hoatzin (a bird), a skink (a reptile), an a moose (a mammal) | |
Scientific classification 
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| Kinrick: | Animalia |
| Phylum: | Chordata |
| Clade: | Stegocephalia |
| Supercless: | Tetrapoda authority unkent, afore 1912 |
| Subgroups | |
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