Pycnodontiformes

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**Pycnodontiformes** is an extinct order of primarily marine bony fish. These prehistoric fish resembled the opahs, but the upper part was larger. This is seen in the genus *Megalampris*. The type genus is *Pycnodus*. 

## Families and genera 
**Order Pycnodontiformes**
* Genus *Acrorhinichthys* Taverne & Capasso, 2015
* Genus *Archaeopycnodon* Sanchez & Benedetto, 1980
* Genus *Arduafrons* Frickhinger, 1991
* Genus *Athrodon* le Sauvage 1880 non Osborn, 1887
* Genus *Callodus* Thurmond, 1974
* Genus *Ellipsodus* Cornuel, 1877
* Genus *Eomesodon* Woodward, 1918
* Genus *Grypodon* Hay, 1899
* Genus *Mercediella* Koerber, 2012
* Genus *Paramesturus* Taverne, 1981
* Genus *Piranhamesodon* Kölbl-Ebert *et al.*, 2018
* Genus *Pseudopycnodus* Taverne, 2003
* Genus *Tergestinia* Capasso, 2000
* Genus *Thurmondella* Thurmond, 1974 non
* Genus *Uranoplosus* le Sauvage, 1879
* Genus ?*Woodthropea* Swinnerton, 1925
** **Family** **Brembodontidae** Tintori, 1981
*** Genus *Brembodus* Tintori, 1981
*** Genus *Gibbodon* Tintori, 1981
** **Family** ?**Hadrodontidae** Thurmond & Jones, 1981
*** Genus *Hadrodus* Leidy, 1858
** **Family** **Gyrodontidae** Berg, 1940
*** Genus *Gyrodus* Agassiz, 1833
** **Family** **Mesturidae** Nursall, 1996
*** Genus *Mesturus* Wagner, 1862
** **Family** **Pycnodontidae** Agassiz, 1833 corrig. Bonaparte, 1845
*** Genus *Abdobalistum* Poyato-Ariza & Wenz, 2002
*** Genus *Acrotemnus* Agassiz, 1843
*** Genus *Agassizilia* Cooper & Martill, 2020
*** Genus *Agoultpycnodus* Taverne & Capasso, 2021
*** Genus *Akromystax* Poyato-Ariza & Wenz, 2005
*** Genus *Anomiophthalmus* Costa, 1856
*** Genus *Anomoeodus* Forir, 1887
*** Genus *Apomesodon* Poyato-Ariza & Wenz, 2002
*** Genus *Athrodon* Sauvage, 1880
*** Genus *Brauccipycnodus* Taverne & Capasso, 2021
*** Genus *Coelodus* Heckel, 1854
*** Genus *Costapycnodus* Taverne, Capasso & del Re, 2019
*** Genus *Flagellipinna* Cawley & Kriwet, 2019
*** Genus *Gregoriopycnodus* Taverne, Capasso & del Re, 2020
*** Genus *Haqelpycnodus* Taverne & Capasso, 2018
*** Genus *Iemanja* Wenz, 1989
*** Genus *Libanopycnodus* Taverne & Capasso, 2018
*** Genus *Macromesodon* Blake 1905 non Lehman, 1966 [*Mesodon* Wagner, 1851 non Rafinesque, 1821; *Gyronchus* Agassiz, 1839; *Apomesodon* Poyato-Ariza & Wenz, 2002]
*** Genus *Micropycnodon* Hibbard & Graffham, 1945
*** Genus ?*Neomesturus* Cooper & Martill 2020
*** Genus *Neoproscinetes* De Figueiredo & Silva Santos, 1990
*** Genus *Njoerdichthys* Cawley, Lehmann, Wiese & Kriwet, 2020
*** Genus *Nonaphalagodus* Thurmond, 1974
*** Genus *Nursallia* Blot, 1987
*** Genus *Ocloedus* Poyato-Ariza & Wenz, 2002
*** Genus *Omphalodus* von Meyer, 1847
*** Genus *Oropycnodus* Poyato-Ariza & Wenz, 2002
*** Genus *Palaeobalistum* Taverne *et al.*, 2015
*** Genus *Paranursallia* Taverne *et al.*, 2015
*** Genus *Phacodus* Dixon, 1850
*** Genus *Polazzodus* Poyoto-Ariza, 2010
*** Genus *Polypsephis* Hay, 1899
*** Genus *Potiguara* Machado & Brito, 2006
*** Genus *Proscinetes* Gistl, 1848
*** Genus *Pycnodus* Agassiz, 1833
*** Genus *Pycnomicrodon* Hay 1916 non Hibbard & Graffham, 1941
*** Genus *Rhinopycnodus* Taverne & Capasso, 2013
*** Genus *Scalacurvichthys* Cawley & Kriwet, 2017
*** Genus *Sigmapycnodus* Taverne & Capasso, 2018
*** Genus *Sphaeronchus* Stinton & Torrens, 1967
*** Genus *Stenamara* Poyato-Ariza & Wenz, 2000
*** Genus *Stemmatias* Hay, 1899
*** Genus *Stemmatodus* Heckel, 1854 non St. John & Worthen, 1875 non
*** Genus *Sylvienodus* Poyato-Ariza & Wenz, 2013
*** Genus *Tepexichthys* Applegate, 1992
*** Genus *Tergestinia* Capasso, 2000
*** Genus *Texasensis* Özdikmen, 2009
*** Genus *Thiollierepycnodus* Ebert, 2020
*** Genus *Tibetodus* Young & Liu, 1954
*** Genus *Turbomesodon* Poyato-Ariza & Wenz, 2004
*** Genus *Typodus* Quenstedt, 1858
** **Family Serrasalmimidae** Vullo *et al*, 2017
*** Genus *Eoserrasalmimus* Vullo *et al*, 2017
*** Genus *Damergouia* Vullo *et al*, 2017
*** Genus *Polygyrodus* White, 1927
*** Genus *Serrasalmimus* Vullo *et al*, 2017
**** **Family** **Coccodontidae** Berg, 1940
***** Genus *Coccodus* Pictet, 1850
***** Genus *Corusichthys* Taverne & Capasso, 2014
***** Genus *Cosmodus* le Sauvage, 1879
***** Genus *Hensodon* Kriwet, 2004
***** Genus *Ichthyoceros* Gayet, 1984 
***** Genus *Paracoccodus* Taverne & Capasso, 2014
***** Genus *Trewavasia* White & Moy-Thomas, 1941
**** **Family** **Gebrayelichthyidae** Nursall & Capasso, 2004
***** Genus *Gebrayelichthys* Nursall & Capasso, 2004
***** Genus *Maraldichthys* Taverne & Capasso, 2014
**** **Family** **Gladiopycnodontidae** Taverne & Capasso, 2013
***** Genus *Ducrotayichthys* Taverne & Capasso, 2015
***** Genus *Gladiopycnodus* Taverne & Capasso, 2013
***** Genus *Hayolperichthys* Taverne & Capasso, 2015
***** Genus *Joinvillichthys* Taverne & Capasso, 2014
***** Genus *Monocerichthys* Taverne & Capasso, 2013
***** Genus *Pankowskichthys* Taverne & Capasso, 2014
***** Genus *Rostropycnodus* Taverne & Capasso, 2013
***** Genus *Stenoprotome* Hay, 1903
***** Genus *Tricerichthys* Taverne & Capasso, 2015

* and *Gebrayelichthys verticalis*]]

## Related pages 
* Pycnodontidae

## References 
# "Pycnodontiformes". Palaeos vertebrates. Archived from the original on 25 October 2008. Retrieved 27 July 2009.