Pycnodontiformes

**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_ <small>Taverne & Capasso, 2015</small>
- Genus _Archaeopycnodon_ <small>Sanchez & Benedetto, 1980</small>
- Genus _Arduafrons_ <small>Frickhinger, 1991</small>
- Genus _Athrodon_ <small>le Sauvage 1880 non Osborn, 1887</small>
- Genus _Callodus_ <small>Thurmond, 1974</small>
- Genus _Ellipsodus_ <small>Cornuel, 1877</small>
- Genus _Eomesodon_ <small>Woodward, 1918</small>
- Genus _Grypodon_ <small>Hay, 1899</small>
- Genus _Mercediella_ <small>Koerber, 2012</small>
- Genus _Paramesturus_ <small>Taverne, 1981</small>
- Genus _Piranhamesodon_ <small>Kölbl-Ebert _et al._, 2018</small>
- Genus _Pseudopycnodus_ <small>Taverne, 2003</small>
- Genus _Tergestinia_ <small>Capasso, 2000</small>
- Genus _Thurmondella_ <small>Thurmond, 1974 non</small>
- Genus _Uranoplosus_ <small>le Sauvage, 1879</small>
- Genus ?_Woodthropea_ <small>Swinnerton, 1925</small>
    - **Family** **Brembodontidae** <small>Tintori, 1981</small>
        - Genus _Brembodus_ <small>Tintori, 1981</small>
        - Genus _Gibbodon_ <small>Tintori, 1981</small>
    - **Family** ?**Hadrodontidae** <small>Thurmond & Jones, 1981</small>
        - Genus _Hadrodus_ <small>Leidy, 1858</small>
    - **Family** **Gyrodontidae** <small>Berg, 1940</small>
        - Genus _Gyrodus_ <small>Agassiz, 1833</small>
    - **Family** **Mesturidae** <small>Nursall, 1996</small>
        - Genus _Mesturus_ <small>Wagner, 1862</small>
    - **Family** **Pycnodontidae** <small>Agassiz, 1833 corrig. Bonaparte, 1845</small>
        - Genus _Abdobalistum_ <small>Poyato-Ariza & Wenz, 2002</small>
        - Genus _Acrotemnus_ <small>Agassiz, 1843</small>
        - Genus _Agassizilia_ <small>Cooper & Martill, 2020</small>
        - Genus _Agoultpycnodus_ <small>Taverne & Capasso, 2021</small>
        - Genus _Akromystax_ <small>Poyato-Ariza & Wenz, 2005</small>
        - Genus _Anomiophthalmus_ <small>Costa, 1856</small>
        - Genus _Anomoeodus_ <small>Forir, 1887</small>
        - Genus _Apomesodon_ <small>Poyato-Ariza & Wenz, 2002</small>
        - Genus _Athrodon_ <small>Sauvage, 1880</small>
        - Genus _Brauccipycnodus_ <small>Taverne & Capasso, 2021</small>
        - Genus _Coelodus_ <small>Heckel, 1854</small>
        - Genus _Costapycnodus_ <small>Taverne, Capasso & del Re, 2019</small>
        - Genus _Flagellipinna_ <small>Cawley & Kriwet, 2019</small>
        - Genus _Gregoriopycnodus_ <small>Taverne, Capasso & del Re, 2020</small>
        - Genus _Haqelpycnodus_ <small>Taverne & Capasso, 2018</small>
        - Genus _Iemanja_ <small>Wenz, 1989</small>
        - Genus _Libanopycnodus_ <small>Taverne & Capasso, 2018</small>
        - Genus _Macromesodon_ <small>Blake 1905 non Lehman, 1966</small> [_Mesodon_ <small>Wagner, 1851 non Rafinesque, 1821</small>; _Gyronchus_ <small>Agassiz, 1839</small>; _Apomesodon_ <small>Poyato-Ariza & Wenz, 2002</small>]
        - Genus _Micropycnodon_ <small>Hibbard & Graffham, 1945</small>
        - Genus ?_Neomesturus_ <small>Cooper & Martill 2020</small>
        - Genus _Neoproscinetes_ <small>De Figueiredo & Silva Santos, 1990</small>
        - Genus _Njoerdichthys_ <small>Cawley, Lehmann, Wiese & Kriwet, 2020</small>
        - Genus _Nonaphalagodus_ <small>Thurmond, 1974</small>
        - Genus _Nursallia_ <small>Blot, 1987</small>
        - Genus _Ocloedus_ <small>Poyato-Ariza & Wenz, 2002</small>
        - Genus _Omphalodus_ <small>von Meyer, 1847</small>
        - Genus _Oropycnodus_ <small>Poyato-Ariza & Wenz, 2002</small>
        - Genus _Palaeobalistum_ <small>Taverne _et al._, 2015</small>
        - Genus _Paranursallia_ <small>Taverne _et al._, 2015</small>
        - Genus _Phacodus_ <small>Dixon, 1850</small>
        - Genus _Polazzodus_ <small>Poyoto-Ariza, 2010</small>
        - Genus _Polypsephis_ <small>Hay, 1899</small>
        - Genus _Potiguara_ <small>Machado & Brito, 2006</small>
        - Genus _Proscinetes_ <small>Gistl, 1848</small>
        - Genus _Pycnodus_ <small>Agassiz, 1833</small>
        - Genus _Pycnomicrodon_ <small>Hay 1916 non Hibbard & Graffham, 1941</small>
        - Genus _Rhinopycnodus_ <small>Taverne & Capasso, 2013</small>
        - Genus _Scalacurvichthys_ <small>Cawley & Kriwet, 2017</small>
        - Genus _Sigmapycnodus_ <small>Taverne & Capasso, 2018</small>
        - Genus _Sphaeronchus_ <small>Stinton & Torrens, 1967</small>
        - Genus _Stenamara_ <small>Poyato-Ariza & Wenz, 2000</small>
        - Genus _Stemmatias_ <small>Hay, 1899</small>
        - Genus _Stemmatodus_ <small>Heckel, 1854 non St. John & Worthen, 1875 non</small>
        - Genus _Sylvienodus_ <small>Poyato-Ariza & Wenz, 2013</small>
        - Genus _Tepexichthys_ <small>Applegate, 1992</small>
        - Genus _Tergestinia_ <small>Capasso, 2000</small>
        - Genus _Texasensis_ <small>Özdikmen, 2009</small>
        - Genus _Thiollierepycnodus_ <small>Ebert, 2020</small>
        - Genus _Tibetodus_ <small>Young & Liu, 1954</small>
        - Genus _Turbomesodon_ <small>Poyato-Ariza & Wenz, 2004</small>
        - Genus _Typodus_ <small>Quenstedt, 1858</small>
    - **Family Serrasalmimidae** <small>Vullo _et al_, 2017</small>
        - Genus _Eoserrasalmimus_ <small>Vullo _et al_, 2017</small>
        - Genus _Damergouia_ <small>Vullo _et al_, 2017</small>
        - Genus _Polygyrodus_ <small>White, 1927</small>
        - Genus _Serrasalmimus_ <small>Vullo _et al_, 2017</small>
            - **Family** **Coccodontidae** <small>Berg, 1940</small>
                - Genus _Coccodus_ <small>Pictet, 1850</small>
                - Genus _Corusichthys_ <small>Taverne & Capasso, 2014</small>
                - Genus _Cosmodus_ <small>le Sauvage, 1879</small>
                - Genus _Hensodon_ <small>Kriwet, 2004</small>
                - Genus _Ichthyoceros_ <small>Gayet, 1984</small>
                - Genus _Paracoccodus_ <small>Taverne & Capasso, 2014</small>
                - Genus _Trewavasia_ <small>White & Moy-Thomas, 1941</small>
            - **Family** **Gebrayelichthyidae** <small>Nursall & Capasso, 2004</small>
                - Genus _Gebrayelichthys_ <small>Nursall & Capasso, 2004</small>
                - Genus _Maraldichthys_ <small>Taverne & Capasso, 2014</small>
            - **Family** **Gladiopycnodontidae** <small>Taverne & Capasso, 2013</small>
                - Genus _Ducrotayichthys_ <small>Taverne & Capasso, 2015</small>
                - Genus _Gladiopycnodus_ <small>Taverne & Capasso, 2013</small>
                - Genus _Hayolperichthys_ <small>Taverne & Capasso, 2015</small>
                - Genus _Joinvillichthys_ <small>Taverne & Capasso, 2014</small>
                - Genus _Monocerichthys_ <small>Taverne & Capasso, 2013</small>
                - Genus _Pankowskichthys_ <small>Taverne & Capasso, 2014</small>
                - Genus _Rostropycnodus_ <small>Taverne & Capasso, 2013</small>
                - Genus _Stenoprotome_ <small>Hay, 1903</small>
                - Genus _Tricerichthys_ <small>Taverne & Capasso, 2015</small>

## Related pages

- Pycnodontidae

## References

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