Rhipidistia

Rhipidistians
Temporal range:
Early Devonian - Present, 416–0 Ma
Ectosteorhachis
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Sarcopterygii
Clade: Rhipidistia
Subgroups

The Rhipidistia, also known as dipnotetrapodomorphs (formally Dipnotetrapodomorpha)[1] are a clade of lobe-finned fishes which include the tetrapods and lungfishes. Rhipidistia formerly referred to a subgroup of Sarcopterygii consisting of the Porolepiformes and Osteolepiformes, a definition that is now obsolete.[2] However as cladistic understanding of the vertebrates has improved over the last few decades a monophyletic Rhipidistia is now understood to include the whole of Tetrapoda and the lungfishes.

Relationships

The cladogram presented below is based on studies compiled by Philippe Janvier and others for the Tree of Life Web Project,[3] Mikko's Phylogeny Archive[4] and Swartz 2012.[5]

Sarcopterygii


†Onychodontidae

Actinistia (coelacanths)


Rhipidistia


†Styloichthys


Dipnomorpha


†Porolepiformes

Dipnoi (lungfishes)



Tetrapodomorpha


?†Tungsenia

†Kenichthys


†Rhizodontiformes


?†Thysanolepidae

†Canowindridae


†Osteolepiformes


Eotetrapodiformes


†Tristichopteridae


†Tinirau


†Platycephalichthys


Elpistostegalia


†Panderichthys


†Elpistostegidae


Stegocephalia


†Elginerpetonidae



†Metaxygnathus

†Ventastega

Tetrapoda















References

  1. ↑ Joseph S., Nelson (19 May 2006). Fishes of the World. John Wiley & Sons. p. 461. ISBN 978-0-471-75644-6. Retrieved 9 May 2015.
  2. ↑ "Encyclopædia Britannica". Retrieved 3 April 2014.
  3. ↑ Janvier, Philippe. 1997. Vertebrata. Animals with backbones. Version 01 January 1997 (under construction). http://tolweb.org/Vertebrata/14829/1997.01.01 in The Tree of Life Web Project, http://tolweb.org/
  4. ↑ Haaramo, Mikko (2003). "Sarcopterygii". in Mikko's Phylogeny Archive. Retrieved November 4, 2013.
  5. ↑ Swartz, B. (2012). "A marine stem-tetrapod from the Devonian of Western North America". PLoS ONE. 7 (3): e33683. PMC 3308997 Freely accessible. PMID 22448265. doi:10.1371/journal.pone.0033683.


This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.