Onychodontiformes

Onychodontiformes Temporal range: Pragian–Famennian PreꞒ Ꞓ O S D C P T J K Pg N Possible Lochkovian record[1]
Reconstruction of Onychodus
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Sarcopterygii
Order:	†Onychodontiformes Andrews, 1973
Genera
†Bukkanodus Johanson et al., 2007 †Grossius Schultze, 1973 †Luckeus Young & Schultze, 2005 †Onychodus Newberry, 1857 †Qingmenodus Lu & Zhu, 2009 †Selenodus Mondéjar-Fernández, 2020 †Strunius Jessen, 1966

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]

Phylogeny

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

References

External links

• Onychodontiformes at Palaeos
• Onychodontida phylogeny at Mikko's Phylogeny Archive

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Evolution of fish

• Fish
• Timeline of fish evolution

Forerunners

• Basal member
  • †Pikaia
• Cephalochordate
  • †Cathaymyrus
  • Lancelet
• Olfactores
  • †Haikouella
  • Tunicate
  • †Myllokunmingiidae? (†Haikouichthys, †Myllokunmingia)
  • †Zhongxiniscus?

Jawless fish

Cyclostomata	Hagfish Hyperoartia Lamprey
†Conodonts	†Protoconodonta? †Paraconodontida †Conodonta
†Ostracoderms	†Pteraspidomorphi †Thelodonti †Anaspida †Cephalaspidomorphi †Galeaspida †Pituriaspida †Osteostraci

Jawed fish

†Placoderms	†Antiarchi †Arthrodira †Brindabellaspida †Petalichthyida †Phyllolepida †Ptyctodontida †Rhenanida †Acanthothoraci †Pseudopetalichthyida? †Stensioellida?
†Acanthodii	†Acanthodiformes †"Climatiiformes" †Diplacanthiformes †Ischnacanthiformes
Cartilaginous	Elasmobranchii †Ctenacanthiformes †Hybodontiformes †Phoebodontiformes †Xenacanthida Ray Shark Holocephali †Eugeneodontida †Iniopterygiformes †Petalodontiformes †Symmoriiformes Chimaera
Bony	Lobe-finned †Onychodontiformes Coelacanth Rhipidistia †Porolepiformes Lungfish Tetrapodomorpha Ray-finned †"Palaeonisciformes" Cladistia Polypteriformes Chondrostei Acipenseriformes Neopterygii †Pycnodontiformes Halecomorphi Ginglymodi Teleost

Lists

• Lists of prehistoric fish
  • spiny sharks
  • placoderms
  • cartilaginous
  • bony
  • lobe-finned
• List of transitional fossils

Related

• Prehistoric life
• Transitional fossils
• Vertebrate paleontology

† extinct

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