Acanthostega

Acanthostega; Temporal range: Late Devonian (Famennian),
	Skeletal reconstruction
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Sarcopterygii
Clade:	Tetrapodomorpha
Clade:	Stegocephali
Family:	†Acanthostegidae; Jarvik, 1952
Genus:	†Acanthostega; Jarvik, 1952
Species:	†A. gunnari
Binomial name
	†Acanthostega gunnari; Jarvik, 1952

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.
^ [1] Archived February 25, 2007, at the Wayback Machine

[1] Benton, Michael J. (2019). "Acanthostega". Vertebrate Palaeontology (Kindle ed.). Wiley. p. 90.

[scientificamerican-2] [1] Archived February 25, 2007, at the Wayback Machine

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