Natura - nature
actualia - actual entities
Mundus Plinius - physical world
naturalia - natural bodies
Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
Clade neomura Cavalier-Smith, 1987
Domain Eukaryota Chatton, 1925 - eukaryotes
Clade discaria Cavalier-Smith, 2021
Clade dorsates Cavalier-Smith, 2021
Clade podiates Cavalier-Smith, 2012
Clade Amorphea Adl et al. 2012 [Simpson, Medina & Adl 2020]
Clade Obazoa Brown, Sharpe, Silberman, Heiss, Lang, Simpson & Roger 2013
Clade Opisthokonta Cavalier-Smith 1987 [Simpson & Medina 2020] - animal-fungal clade
Superkingdom Holozoa Lang, O'Kelly, Nerad, Gray & Burger, 2002
Clade filozoa Shalchian-Tabrizi, Minge, Espelund, Orr, Ruden, Jakobsen & Cavalier-Smith, 2008
Kingdom Animalia Linnaeus, 1758 - animals
Clade Planulozoa Wallberg, Thollesson, Farris & Jondelius 2004
Subkingdom Bilateria Hatschek, 1888 - bilaterians
Clade Nephrozoa Jondelius, Ruiz-Trillo, Baguñà & Riutort 2002
Infrakingdom Deuterostomia Grobben, 1908
Phylum Chordata Bateson, 1885 - chordates
Subphylum Craniata auct.
Infraphylum Myxinomorphi [monotypic]
Class Myxiniᵀ Jaekel, 1911 [monotypic]
Order Myxiniformesᵀ [monotypic] - hagfishes
Family Myxinidaeᵀ Rafinesque, 1815 - hagfishes
Subfamily Eptatretinae Bonaparte, 1850 [monotypic] - multi-gill hagfishes
Genus Eptatretusᵀ Cloquet, 1819
01 Eptatretus alastairi Mincarone & Fernholm, 2010
02 Eptatretus ancon (Mok, Saavedra-Diaz & Acero P., 2001)
03 Eptatretus astrolabium Fernholm & Mincarone, 2010
04 Eptatretus atami (Dean, 1904) - black hagfish
05 Eptatretus bischoffii (Schneider, 1880)
06 Eptatretus burgeri (Girard, 1855) - inshore hagfish
07 Eptatretus caribbeaus Fernholm, 1982
08 Eptatretus carlhubbsi McMillan & Wisner, 1984
09 Eptatretus cheni (Shen & Tao, 1975)
10 Eptatretus chinensis Kuo & Mok, 1994
11 Eptatretus cirrhatus (Forster, 1801)
12 Eptatretus deani (Evermann & Goldsborough, 1907) - black hagfish
13 Eptatretus eos Fernholm, 1991
14 Eptatretus fernholmi McMillan & Wisner, 2004
15 Eptatretus fernholmi (Kuo, Huang & Mok, 1994)
16 Eptatretus fritzi Wisner & McMillan, 1990
17 Eptatretus goliath Mincarone & Stewart, 2006
18 Eptatretus gomoni Mincarone & Fernholm, 2010
19 Eptatretus grouseri McMillan, 1999
20 Eptatretus hexatrema (Müller, 1836) - sixgill hagfish
21 Eptatretus indrambaryai Wongratana, 1984
22 Eptatretus lakeside Mincarone & McCosker, 2004
23 Eptatretus laurahubbsae McMillan & Wisner, 1984, nom. corr.
24 Eptatretus longipinnis Strahan, 1975
25 Eptatretus lopheliae Fernholm & Quattrini, 2008
26 Eptatretus mcconnaugheyi Wisner & McMillan, 1990
27 Eptatretus mccoskeri McMillan, 1999
28 Eptatretus mendozai Hensley, 1985
29 Eptatretus menezesi Mincarone, 2000
30 Eptatretus minor Fernholm & Hubbs, 1981
31 Eptatretus moki (McMillan & Wisner, 2004)
32 Eptatretus multidens Fernholm & Hubbs, 1981
33 Eptatretus nanii Wisner & McMillan, 1988
34 Eptatretus nelsoni (Kuo, Huang & Mok, 1994)
35 Eptatretus octatrema (Barnard, 1923)
36 Eptatretus okinoseanus (Dean, 1904)
37 Eptatretus polytrema (Girard, 1855) - Chilean hagfish
38 Eptatretus profundus (Barnard, 1923)
39 Eptatretus rubicundus Kuo, Lee & Mok, 2010
40 Eptatretus sheni (Kuo, Huang & Mok, 1994)
41 Eptatretus sinus Wisner & McMillan, 1990
42 Eptatretus springeri (Bigelow & Schroeder, 1952) - Gulf hagfish
43 Eptatretus stoutii (Lockington, 1878) - Pacific hagfish
44 Eptatretus strahani McMillan & Wisner, 1984
45 Eptatretus strickrotti Møller & Jones, 2007
46 Eptatretus taiwanae (Shen & Tao, 1975)
47 Eptatretus walkeri (McMillan & Wisner, 2004)
48 Eptatretus wayuu Mok, Saavedra-Diaz & Acero P., 2001
49 Eptatretus wisneri (Kuo, Huang & Mok, 1994)
50 Eptatretus wisneri McMillan, 1999, nom. illeg.
51 Eptatretus yangi (Teng, 1958)