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| Acanthostega Temporal range: Late Devonian (Famennian),
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| Skeletal reconstruction | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Sarcopterygii |
| Clade: | Tetrapodomorpha |
| Clade: | Stegocephali |
| Family: | †Acanthostegidae Jarvik, 1952 |
| Genus: | †Acanthostega Jarvik, 1952 |
| Species: | †A. gunnari
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| Binomial name | |
| †Acanthostega gunnari Jarvik, 1952
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Acanthostega (meaning "spiny roof") is an extinct genus of stem-tetrapod, among the first vertebrate animals to have recognizable limbs. It appeared in the late Devonian period (Famennian age) about 365 million years ago, and was anatomically intermediate between lobe-finned fishes and those that were fully capable of coming onto land.[1][2]
- ^ Benton, Michael J. (2019). "Acanthostega". Vertebrate Palaeontology (Kindle ed.). Wiley. p. 90.
- ^ Clack, Jennifer A. (21 November 2005). "Getting a Leg Up on Land". Scientific American. Archived from the original on 25 February 2007.