Natura - nature
actualia - actual entities
Mundus Plinius - physical world
naturalia - natural bodies
[crown] 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
[crown] Clade Amorphea Adl et al. 2012 [Simpson, Medina & Adl 2020]
[crown] Clade Obazoa Brown, Sharpe, Silberman, Heiss, Lang, Simpson & Roger 2013
[crown] 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 Vertebrata Cuvier, 1812 - vertebrates
Myopterygii - myopterygians
Superclass Gnathostomata Gegenbaur, 1874 - jawed vertebrates
Grade Teleostomi Bonaparte, 1836
Euteleostomi - bony vertebrates
Class Actinopterygii Woodward, 1891 - ray-finned fishes
[crown] Actinopteri Cope, 1871
Subclass Neopterygii Regan, 1923
Infraclass Teleostei Müller, 1845
Supercohort Teleocephala de Pinna, 1996
Cohort Elopomorpha Greenwood et al., 1966
Order Anguilliformes Rafinesque, 1810 - eels
Suborder Congroidei (Regan, 1909)
Family Ophichthidae Günther, 1870 - snake eels and worm eels
Subfamily Ophichthinaeᵀ
Genus Apterichtus Duméril, 1806
Apterichtus anguiformis (Peters, 1877) - slender finless eel
Apterichtus ansp (Böhlke, 1968) - academy eel
Apterichtus australis McCosker & Randall, 2005
Apterichtus caecus (C. Linnaeus, 1758) - European finless eel
Apterichtus equatorialis (Myers & Wade, 1941) - finless eel
Apterichtus flavicaudus (Snyder, 1904)
Apterichtus gracilis (Kaup, 1856)
Apterichtus gymnocelus (Böhlke, 1953)
Apterichtus kendalli (Gilbert, 1891) - finless eel
Apterichtus keramanus Machida, Hashimoto & Yamakawa, 1997
Apterichtus klazingai (Weber, 1913)
Apterichtus monodi (Roux, 1966)
Apterichtus moseri (Jordan & Snyder, 1901)
Apterichtus orientalis Machida & Ohta, 1994