Pachycormiformes

Pachycormiformes Temporal range: Early Jurassic - Late Cretaceous, Toarcian–Maastrichtian PreꞒ Ꞓ O S D C P T J K Pg N
Skeleton of Pachycormus
Skeleton of Orthocormus
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Infraclass:	Teleosteomorpha
Division:	† Aspidorhynchei
Order:	†Pachycormiformes Berg 1937
Family:	†Pachycormidae Woodward, 1895
Type genus
Pachycormus Agassiz, 1833
Genera
See text
Synonyms[1]
Diphyodontidae Jordan, 1923 Erisichtheidae Cope, 1877b Microlepidoti Zittel, 1887 Pelecopteridae Cope, 1875 Protosphyraenidae Lydekker, 1889 Sauropsidae Cope, 1877a Saurotomini [Saurostomini] Bonaparte, 1846 corrig. Bonaparte 1850a

Pachycormiformes is an extinct order of marine

Description

Pachycormiformes are united by "a compound bone (rostrodermethmoid) forming the

Pachycormiformes are generally interpreted as basal members of Teleosteomorpha, the group that includes all fish more closely related to modern teleosts than to Holostei (the group containing bowfin and gars), often they have been considered to be the sister group of the Aspidorhynchiformes.^[6][7]

Gallery

Taxonomy

Taxonomy according to Cooper et al. (2022):^[8]

• Euthynotus Wagner, 1860
• Haasichthys Delsate, 1999
• Notodectes Dolgopol de Saez, 1949
• Pseudoasthenocormus
• Sauropsis Agassiz, 1843
• Hypsocorminae Vetter, 1881
  • Australopachycormus Kear, 2007
  • Hypsocormus Wagner, 1860
  • Kaykay Gouiric-Cavalli & Arratia, 2022^[9]
  • Orthocormus Weitzel, 1930
  • Protosphyraena Leidy, 1857
  • Simocormus Maxwell et al., 2020
• Asthenocorminae Cooper et al., 2022
  • Germanostomus Cooper et al., 2022^[8]
  • Ohmdenia Hauff, 1953
  • Pachycormus? Agassiz, 1833
  • Saurostomus Agassiz, 1843
  • Suspension-feeding clade
    • Asthenocormus Woodward, 1895
    • Bonnerichthys Friedman et al., 2010
    • Leedsichthys Woodward, 1889
    • Martillichthys Liston, 2008
    • Rhinconichthys Friedman et al., 2010

Cladistics according to Friedman et al. (2010).^[10]

References