Tetrapoda

Biology Encyclopedia	Tetrapoda Broili, 1913 “four-footed”
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Common Names

Tetrapod

Latin Synonyms

Amphibia Linnaeus, 1758

Linnaean Rank

Ancestral Phylogeny and Taxonomy

Teleostomi	†Acanthodii
	Euteleostomi	Actinopterygii
		Sarcopterygii	Actinistia
			Dipnoi
			Tetrapodomorpha	†Rhizodontidae
				†Osteolepiformes
				†Panderichthyida
				Tetrapoda
				†Tetrapodomorpha inc sed.

Explanation of phylogenetic trees

Lineage

Terrabiota, Cytota, Neomura, Eukaryota, Unikonta, Opisthokonta, Animalia, Metazoa, Eumetazoa, Bilateria, Deuterostomia, Cyrtotreta, Chordata, Notochordata, Vertebrata, Gnathostomata, Teleostomi, Euteleostomi, Sarcopterygii, Tetrapodomorpha

Descendant Phylogeny and Taxonomy

Tetrapoda	†Basal Tetrapods		†Ichthyostega
			†Acanthostega
	Batrachomorpha		†Lepospondyli
			†Temnospondyli
			Lissamphibia
	Reptilomorpha	†Anthracosauria
		†Seymouriamorpha
		Cotylosauria	†Diadectomorpha
			Amniota

Explanation of phylogenetic trees

There are quite a few basal tetrapod fossils other than Ichthyostega and Acanthostega, of which some may be more closely related to Batrachomorpha and others closer to Reptilomorpha. For more detailed information on these fossils see Basal Tetrapods. Lepospondyli, here containing Microsauria and Nectridae, and Temnospondyli are both likely to be paraphyletic stem groups.

Morphology

Distribution

Ecology

Ethology

Evolution

Development

Ethnobiology

Population

Notes and Comments

References

Literature

Information on the Internet

Early tetrapod evolution. Michel Laurin, Marc Girondot and Armand de Ricqlès. 2000.