Pachycormiformes

Pachycormiformes
Temporal range: Late Triassic - Late Cretaceous, 228–65.5 Ma
Hypsocormus of the Pachycormidae
Scientific classification
Kingdom:Animalia
Phylum:Chordata
Class:Actinopterygii
Division:†Aspidorhynchei
Order:†Pachycormiformes
Families
Protosphyraena perniciosa

Pachycormiformes is an extinct order of ray-finned fish known from Mesozoic deposits from Eurasia and the Americas. They were characterized by having serrated pectoral fins, reduced pelvic fins and a bony rostrum. Their relations with other fish are unclear.

Some sources place Ichthyodectidae herein too, but these seem to be somewhat more advanced Teleostei.

Taxonomy

  • Order †Pachycormiformes Berg 1937 [Pachycormida][1][2][3]
    • Family †Archaeomaenidae
    • Family †Koonwarriidae Waldman 1971
    • Family †Pachycormidae Lydekker 1889 [Protosphyraenidae Cope 1875; Erisichtheidae Cope 1877; Pelecopteridae Cope 1875; Saurostomini Bonaparte 1846 corrig. Bonaparte 1850a; Sauropsidae Cope 1877a; Microlepidoti Zittel 1887]
      • Genus ?†Atacamichthys Arratia & Schultze 1987
      • Genus ?†Bobbichthys Arratia 1986
      • Genus ?†Cephenoplosus le Sauvage 1874
      • Genus ?†Eugnathides Gregory 1923
      • Genus ?†Haasichthys Delsate 1999
      • Genus ?†Hengnania Wang 1977
      • Genus ?†Pholidophoroides Woodward 1941
      • Genus ?†Pholidophoropsis Nybelin 1966
      • Genus ?†Prymnetes Cope 1871
      • Genus ?†Pseudoasthenocormus (Eastman 1911) Lambers 1999
      • Genus ?†Seefeldia Nybelin 1974
      • Genus ?†Prosauropsis (von Münster 1842) le Sauvage 1893
      • Genus ?†Sauropsis Agassiz 1832 [Diplolepis Vetter 1881 non Geoffryoy 1762 non Fabricius 1805 non Steindachner 1863; Parathrissops le Sauvage 1891 non Eastman 1914]
      • Genus ?†Saurostomus Agassiz 1843
      • Genus †Euthynotus Wagner 1860 [Heterothrissops le Sauvage 1875; Pseudothrissops Sauvage 1875]
      • Genus †Hypsocormus Wagner 1860
      • Genus †Orthocormus Weitzel 1930
      • Genus †Australopachycormus Kear 2007
      • Genus †Protosphyraena Leidy 1857 [Erisichthe Cope 1872; Pelecopterus Cope 1875]
      • Genus †Pachycormus Agassiz 1833 non Coville ex Standley 1923 [?Pachylepis Quenstedt 1858 non Pander 1856; ?Lycodus Quenstedt 1856]
      • Genus †Martillichthys Liston 2008
      • Genus †Asthenocormus Woodward 1895 [Agassizia Vetter 1881 non Agassiz & Desor 1847 non Behr 1870 non Yoshiyasu 1987]
      • Genus †Bonnerichthys Friedman et al. 2010
      • Genus †Leedsichthys Woodward 1889 [Leedsia Woodward 1890]
      • Genus †Rhinconichthys Friedman et al. 2010
  • http://www.courtenaymuseum.ca/paleo/paleo/pachycor.html
  • https://web.archive.org/web/20081025044133/http://www.palaeos.com/Vertebrates/Units/100Neopterygii/100.600.html
  • Sepkoski, Jack (2002). "A compendium of fossil marine animal genera". Bulletins of American Paleontology. 363: 1–560. Retrieved 2011-05-17.
  • "Pachycormiformes". Paleobiology Database. Retrieved November 11, 2012.

References

  1. ↑ Haaramo, Mikko (2007). "†Pachycormiformes". Mikko's Phylogeny Archive. Retrieved 30 December 2016.
  2. ↑ Nelson, Joseph S.; Grande, Terry C.; Wilson, Mark V. H. (2016). Fishes of the World (5th ed.). John Wiley & Sons. ISBN 9781118342336.
  3. ↑ van der Laan, Richard (2016). "Family-group names of fossil fishes".
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