| Eptatretus | 
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| Eptatretus stoutii | 
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| Scientific classification | 
| Domain: | Eukaryota | 
 
| Kingdom: | Animalia | 
 
| Phylum: | Chordata | 
 
| Subphylum: | Vertebrata | 
 
| Infraphylum: | Agnatha | 
 
| Superclass: | Cyclostomi | 
 
| Class: | Myxini | 
 
| Order: | Myxiniformes | 
 
| Family: | Myxinidae | 
 
| Subfamily: | Eptatretinae | 
 
| Genus: | Eptatretus Cloquet, 1819
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| Type species | 
| Gastrobranche dombey 
 Lacepède, 1798 | 
| Synonyms | 
| Bdellostoma Mueller 1835Dodecatrema Fowler 1947Myxine (Heptatrema) Voigt 1832Heptatrema Dumeril 1832 ex Voigt 1832Petromyzon (Heptatremus) Swainson 1839Heterotrema Girard 1855 non Fiedler 1889Hexabranchus Schultze 1836 non Ehrenberg 1831Hexatrema Girard, 1855Homea Fleming 1822Polistotrema Gill ex Jordan & Gilbert 1881Polytrema Girard, 1855 non Rafinesque 1819 non Ferussac 1822 non D'Orbigny 1850 non Risso 1826 non Hickson 1911 non Clarke 1908Paramyxine Dean 1904Quadratus Wisner 1999 non Thiergart & Frantz 1962Heptatretus Regan 1912Diporobranchia Latreille 1825
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Eptatretus is a large genus of hagfish.