Onychodontida

Onychodontida (= Onychodontiformes or Struniiformes) is an order of prehistoric sarcopterygian fish that lived between Late Silurian to Late Devonian period. The onychodontiformes are probably a paraphyletic group of basal sarcopterygians.

Onychodontida
Temporal range: Late Silurian - Late Devonian
Reconstruction of Onychodus
Scientific classification
Kingdom:
Animalia
Phylum:
Chordata
Subphylum:
Vertebrata
Infraphylum:
Gnathostomata
Superclass:
Osteichthyes
Class:
Sarcopterygii
Subclass:
Crossopterygii
Order:
†Onychodontiformes
Andrews, 1973
Family:
†Onychodontidae Woodward 1891
Clades

Phylogeny

Based on a phylogram by Long, 2001, and Lu & Zhu, 2009 and presented in Mikko's Phylogeny Archive [1]

 
 

?†Quebecius quebecensis Whiteaves, 1889

 
 

?†Luckeus abudda Young & Schultze, 2005

 
 

?†Bukkanodus jesseni Johanson et al., 2007

 
 
†Strunius
 

†S. rolandi Jessen, 1966

 
 

†S. walteri (Gross, 1936)

 
 
 
 

†Qingmenodus yui Lu & Zhu, 2009

 
 
 

†Grossius aragonensis Schultze, 1973

 
†Onychodus
 

†O. anglicus Woodward, 1888

 
 

†O. arcticus Woodward, 1889

 
 

†O. hopkinsi Newberry, 1857

 
 

†O. jaekeli Gross, 1965

 
 

†O. jandemarrai Andrews, et al. 2006

 
 

†O. obliquidentatus Jessen, 1966

 
 

†O. ortoni Newberry, 1889

 
 

†O. sigmoidesT Newberry, 1857

 
 

†O. yassensis Lindley, 2002

 
 
 
 
 
 

A new phylogenetic analysis of sarcopterygians, incorporating new fossils of Qingmenodus and neurocranial characters previously neglected, supported Onychodontiformes as stem-coelacanths within Actinistia.[2]

Onychodus, primitive sarcopterygian from Middle Devonian
gollark: It literally just generates a polynomial which goes through a bunch of points I put in.
gollark: This isn't capable of magically generating elegant formulae for any sequence you feed it.
gollark: It's not weird.
gollark: x = 6, the first whole number outside of what you specified, produces 10.
gollark: * at x = 1

References
  1. Haaramo, Mikko (2003). "Onychodontida". in Mikko's Phylogeny Archive. Retrieved November 4, 2013.
  2. Lu, J., et al. 2016. A Devonian predatory fish provides insights into the early evolution of modern sarcopterygians. Science Advances, vol. 2, no. 6, e1600154, doi:10.1126/sciadv.1600154


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