Elpistostegalia

order of fishes

Elpistostegalia, also known as Panderichthyida, is a type of prehistoric fish which lived about 385 to 374 million years ago.[2]

Elpistostegalia
Temporal range:
Late Devonian - Present, 385–0 Ma
Panderichthys BW.jpg
Panderichthys
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Clade: Eotetrapodiformes
Clade: Elpistostegalia
Camp & Allison, 1961
Type genus
Elpistostege
Westoll, 1938
Subgroups[1]
Synonyms
  • Panderichthyida Vorobyeva, 1989

Why they evolvedEdit

A rise in the world's oxygen content caused predatory fish to evolve,[3] and this fish was the most successful.[4]

What they evolved fromEdit

Below is a description of their evolutionary family tree.[1]

Eotetrapodiformes

Tristichopteridae  




Tinirau




Platycephalichthys


Elpistostegalia

Panderichthys  





Tiktaalik  



Elpistostege





Elginerpeton  




Ventastega




Acanthostega  




Ichthyostega  




Whatcheeriidae  




Colosteidae  




Crassigyrinus  




Baphetidae
















ReferencesEdit

  1. 1.0 1.1 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.
  2. Elpistostegidae on the Taxonomicon
  3. Dahl TW, Hammarlund EU, Anbar AD, et al. (October 2010). "Devonian rise in atmospheric oxygen correlated to the radiations of terrestrial plants and large predatory fish". Proc. Natl. Acad. Sci. U.S.A. 107 (42): 17911–5. Bibcode:2010PNAS..10717911D. doi:10.1073/pnas.1011287107. PMC 2964239. PMID 20884852.
  4. Lewis Jr., William M. (1 June 1970). "Morphological Adaptations of Cyprinodontoids for Inhabiting Oxygen Deficient Waters" (PDF). Copeia. 2 (2): 319–326. doi:10.2307/1441653. JSTOR 1441653. Archived from the original (PDF) on 2011-08-13.