Onychodontiformes

Onychodontiformes (also known as Onychodontida and Struniiformes) is an order of prehistoric sarcopterygian fish that lived during the Devonian period. The onychodontiforms are generally regarded as early-diverging members of the coelacanth lineage.[2][1]

Onychodontiformes
Temporal range: Possible Lochkovian record[1]
Reconstruction of Onychodus
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Clade: Sarcopterygii
Order: †Onychodontiformes
Andrews, 1973
Genera

Phylogeny

The following cladogram is adapted from Mondéjar-Fernández (2020). The study recovered Onychodontiformes as a paraphyletic group, which is shown in green:[1]

Crown-Sarcopterygii
 
 

Styloichthys

 
Rhipidistia
 

Dipnomorpha

 
 

Tetrapodomorpha

 
 
 
 
 

Bukkanodus

 
 
 

Selenodus

 
 
 
 
 

Grossius

 
 

Onychodus

 
 
 
 

Qingmenodus

 
 

Strunius

 
 
 
Actinistia
 

Euporosteus

 
 

Gavinia

 
 

Miguashaia

 
 
 

Diplocercides

 
 

Latimeria

 
 
 
 
 
Onychodontiformes
 
 

References
  1. Mondéjar-Fernández, J. (2020). "A new onychodont (Osteichthyes; Sarcopterygii) from the Middle Devonian of Morocco and its bearing on early osteichthyan evolution". Journal of Systematic Palaeontology. 18 (7): 573–606. doi:10.1080/14772019.2019.1655495. S2CID 208586697.
  2. Lu, J.; Zhu, M.; Ahlberg, P. E.; Qiao, T.; Zhu, Y.; Zhao, W.; Jia, L. (2016). "A Devonian predatory fish provides insights into the early evolution of modern sarcopterygians". Science Advances. 2 (6): e1600154. Bibcode:2016SciA....2E0154L. doi:10.1126/sciadv.1600154. PMC 4928971. PMID 27386576.


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