Eotetrapodiformes

Eotetrapodiformes; Temporal range:
	Skull of the tristichopterid Platycephalichthys in CosmoCaixa Barcelona
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Tetrapodomorpha
Clade:	Eotetrapodiformes; Coates & Friedman, 2010
Subgroups
	†Tristichopteridae; (Possibly paraphyletic)[1]; Elpistostegalia;

Eotetrapodiformes is a clade of tetrapodomorphs including the four-limbed vertebrates ("tetrapods" in the traditional sense) and their closest finned relatives, two groups of stem tetrapods called tristichopterids and elpistostegalids. The clade was named in 2010 by Michael I. Coates and Matt Friedman, and is defined as "the node-based clade arising from the most recent common ancestor of Eusthenopteron and Ichthyostega plus all of its descendants".[2] It thus excludes the basalmost tetrapodomorphs, such as the rhizodonts and megalichthyiforms.[2]

Cladogram from Swartz, 2012:[3]

Megalichthyiformes

Eotetrapodiformes

Tinirau

	Tiktaalik

	Elpistostege

	Baphetidae

	Tetrapoda (Crown group)

References

Clement, A. M.; Cloutier, R.; Lu, J.; Perilli, E.; Maksimenko, A.; Long, J. (2021). "A fresh look at Cladarosymblema narrienense, a tetrapodomorph fish (Sarcopterygii: Megalichthyidae) from the Carboniferous of Australia, illuminated via X-ray tomography". PeerJ. 9: e12597. doi:10.7717/peerj.12597.
Coates, M. I.; Friedman, M. (2010). "Litoptychus bryanti and characteristics of stem tetrapod neurocrania". In Elliot, D.K.; Maisey, J.G.; Yu, X.; Miao, D. (eds.). Morphology, Phylogeny and Paleobiogeography of Fossil Fishes. Pfeil. pp. 389–416. ISBN 978-3-89937-122-2.
Swartz, B. (2012). "A marine stem-tetrapod from the Devonian of Western North America". PLOS ONE. 7 (3): e33683. Bibcode:2012PLoSO...733683S. doi:10.1371/journal.pone.0033683. PMC 3308997. PMID 22448265.

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[Clement2021-1] Clement, A. M.; Cloutier, R.; Lu, J.; Perilli, E.; Maksimenko, A.; Long, J. (2021). "A fresh look at Cladarosymblema narrienense, a tetrapodomorph fish (Sarcopterygii: Megalichthyidae) from the Carboniferous of Australia, illuminated via X-ray tomography". PeerJ. 9: e12597. doi:10.7717/peerj.12597.

[Coates2010-2] Coates, M. I.; Friedman, M. (2010). "Litoptychus bryanti and characteristics of stem tetrapod neurocrania". In Elliot, D.K.; Maisey, J.G.; Yu, X.; Miao, D. (eds.). Morphology, Phylogeny and Paleobiogeography of Fossil Fishes. Pfeil. pp. 389–416. ISBN 978-3-89937-122-2.

[Swartz2012-3] Swartz, B. (2012). "A marine stem-tetrapod from the Devonian of Western North America". PLOS ONE. 7 (3): e33683. Bibcode:2012PLoSO...733683S. doi:10.1371/journal.pone.0033683. PMC 3308997. PMID 22448265.