What is Rhipidistia?
{{Automatic Taxobox | name = Rhipidistia | image= Ectosteorhachis.JPG | image_width = 200px | image_caption = ''Ectosteorhachis'' | fossil_range = Lower [[Devonian]] to Recent | taxon = Rhipidistia | subdivision = }} The '''Rhipidistia''' are [[lobe-finned fish]], and include the ancestors of the [[tetrapod]]s. The Rhipidistia are a subgroup of [[Sarcopterygii]] which includes the lungfish ([[Dipnoi]]) and the [[tetrapodomorph]]s. As [[cladistic]] understanding of the vertebrates has improved over the last few decades a [[monophyletic]] Rhipidistia is now understood to include the ancestor of the whole [[Tetrapoda]]. ==Taxonomy== '''Rhipidistia''' *[[Dipnomorpha]] **†[[Porolepiformes]] ***†''[[Powichthys]]'' **[[Dipnoi]] *[[Tetrapodomorpha]] **†[[Rhizodont]]iformes **[[Osteolepidida]] ***[[Osteolepiform]]es ****†[[Tristichopteridae]] ****[[Elpistostegalia]] *****†''[[Panderichthys]]'' *****[[Tetrapoda]] ==References== *[http://www.palaeos.com/Vertebrates/Units/140Sarcopterygii/140Cladogram.html palaeos.com page] {{Webarchive|url=https://web.archive.org/web/20050828212742/http://palaeos.com/Vertebrates/Units/140Sarcopterygii/140Cladogram.html |date=2005-08-28 }} *[http://sn2000.taxonomy.nl/Taxonomicon/TaxonTree.aspx?id=42351&tree=0.1 Taxonomicon page] {{Webarchive|url=https://web.archive.org/web/20070312192140/http://sn2000.taxonomy.nl/Taxonomicon/TaxonTree.aspx?id=42351&tree=0.1 |date=2007-03-12 }} [[Category:Lobe-finned fish]]