Rhipidistia

Rhipidistia; Temporal range: Lower Devonian to Recent
	File:Ectosteorhachis.JPG
	Ectosteorhachis
Scientific classification Edit this classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Sarcopterygii
Clade:	Rhipidistia

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The Rhipidistia are lobe-finned fish, and include the ancestors of the tetrapods. The Rhipidistia are a subgroup of Sarcopterygii which includes the lungfish (Dipnoi) and the tetrapodomorphs.

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[change]

Rhipidistia

Dipnomorpha
- †Porolepiformes
  - †Powichthys
- Dipnoi
Tetrapodomorpha
- †Rhizodontiformes
- Osteolepidida
  - Osteolepiformes
    - †Tristichopteridae
    - Elpistostegalia
      - †Panderichthys
      - Tetrapoda

References[change]

palaeos.com page Archived 2005-08-28 at the Wayback Machine
Taxonomicon page Archived 2007-03-12 at the Wayback Machine