{{Short description|Extinct order of bony fishes}} {{Automatic Taxobox | fossil_range = {{Fossil range|Pragian|Famennian|earliest=Lochkovian}} {{Small|Possible Lochkovian record}}<ref name="Mondéjar-Fernández2020" /> | image = OnychodusDB15.jpg | image_caption = Reconstruction of ''Onychodus'' | taxon = Onychodontiformes | authority = Andrews, 1973 | subdivision_ranks = Genera | subdivision = * {{Extinct}}''Amazinyomakhulu'' <small>Gress & Ahlberg, 2026</small> * {{Extinct}}''Bukkanodus'' <small>Johanson ''et al.'', 2007</small> * {{Extinct}}''Grossius'' <small>Schultze, 1973</small> * {{Extinct}}''Luckeus'' <small>Young & Schultze, 2005</small> * {{Extinct}}''Onychodus'' <small>Newberry, 1857</small> * {{Extinct}}''Qingmenodus'' <small>Lu & Zhu, 2009</small> * {{Extinct}}''Selenodus'' <small>Mondéjar-Fernández, 2020</small> * {{Extinct}}''Strunius'' <small>Jessen, 1966</small> }}
'''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.<ref name="Lu2016" /><ref name="Mondéjar-Fernández2020" />
==Phylogeny== The following cladogram is adapted from Mondéjar-Fernández (2020). The study recovered Onychodontiformes as a paraphyletic group, which is shown in green:<ref name="Mondéjar-Fernández2020" />
{{Clade|style=font-size:90%; line-height:90% |label1=Crown-Sarcopterygii |1={{Clade |1={{Clade |1=''Styloichthys'' |label2=Rhipidistia |2={{Clade |1=Dipnomorpha |2=Tetrapodomorpha }} }} |grouplabel2={{Clade labels|label1='''Onychodontiformes'''|top1=25%|color=green}} |2={{Clade |1=''Bukkanodus''|barbegin1=green |2={{Clade |1=''Selenodus''|bar1=green |2={{Clade |1={{Clade |1={{Clade |1=''Grossius''|bar1=green |2=''Onychodus''|bar2=green }} |2={{Clade |1=''Qingmenodus''|bar1=green |2=''Strunius''|barend2=green }} }} |label2=Actinistia |2={{Clade |1=''Euporosteus'' |2=''Gavinia'' |3=''Miguashaia'' |4={{Clade |1=''Diplocercides'' |2=''Latimeria'' }} }} }} }} }} }} }}
== References == {{Reflist|refs= <ref name="Lu2016">{{cite journal |last1=Lu |first1=J. |last2=Zhu |first2=M. |last3=Ahlberg |first3=P. E. |last4=Qiao |first4=T. |last5=Zhu |first5=Y. |last6=Zhao |first6=W. |last7=Jia |first7=L. |title=A Devonian predatory fish provides insights into the early evolution of modern sarcopterygians |journal=Science Advances |date=2016 |volume=2 |issue=6 |article-number=e1600154 |doi=10.1126/sciadv.1600154|pmid=27386576 |pmc=4928971 |bibcode=2016SciA....2E0154L }}</ref> <ref name="Mondéjar-Fernández2020">{{cite journal |last1=Mondéjar-Fernández |first1=J. |title=A new onychodont (Osteichthyes; Sarcopterygii) from the Middle Devonian of Morocco and its bearing on early osteichthyan evolution |journal=Journal of Systematic Palaeontology |date=2020 |volume=18 |issue=7 |pages=573–606 |url=https://www.researchgate.net/publication/336238875 |doi=10.1080/14772019.2019.1655495|s2cid=208586697 }}</ref> }}
==External links== * [http://palaeos.com/vertebrates/sarcopterygii/onychodontiformes.html Onychodontiformes at Palaeos] * [http://www.fmnh.helsinki.fi/users/haaramo/Metazoa/Deuterostoma/Chordata/Sarcopterygii/sarcopterygii.htm#Onychodontida Onychodontida phylogeny at Mikko's Phylogeny Archive] {{Webarchive|url=https://web.archive.org/web/20080126083453/http://www.fmnh.helsinki.fi/users/haaramo/Metazoa/deuterostoma/chordata/Sarcopterygii/Sarcopterygii.htm#Onychodontida |date=2008-01-26 }}
{{Evolution of fish|state=collapsed}} {{Osteichthyes}} {{Taxonbar|from1=Q137818|from2=Q7095147}}
Category:Onychodontida Category:Prehistoric lobe-finned fish Category:Prehistoric fish orders Category:Devonian bony fish Category:Early Devonian first appearances Category:Famennian extinctions Category:Paraphyletic groups
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