The order Aulopiformes as presented here follows the classification of Baldwin & Johnson (1996) and Sato & Nakabo (2002). Nelson (1994) recognised four extant suborders with 13 families, and one fossil suborder; this classification largely follows the work of Hartel & Stiassny (1986). Baldwin & Johnson (1996) discussed relationships within the group and provided information on relationships which differed from previous classifications. The classification of Baldwin & Johnson (1996) recognised Bathysauridae as distinct and related to Giganturidae, and placed Anotopterus within the Paralepedidae. Although Baldwin & Johnson (1996) retained four suborders, the arrangement of families differs considerably from earlier classifications. Sato & Nakabo (2002) erected Paraulopidae to include a group of species from Chlorophthalmidae and recognised Bathysauropsidae for Bathysauropsis and the Bathysauroididae for Bathysauroides. Nelson (2006) followed the classification of Baldwin & Johnson (1996) in recognising two suborders of extant fishes and two fossil suborders for the Aulopiformes.
Baldwin, C.C. & Johnson, G.D. 1996. Interrelationships of Aulopiformes. pp. 355-404 in Stiassny, M.L.J., Parenti, L.R. & Johnson, G.D. (eds). Interrelationships of Fishes. San Diego : Academic Press 496 pp.
Hartel, K.E. & Stiassny, L.J. 1986. The identification of larval Parasudis (Teleostei, Chlorophthalmidae); with notes on the anatomy and relationships of aulopiform fishes. Breviora. Museum of Comparative Zoology 487: 1-23
Nelson, J.S. 1994. Fishes of the World. New York : John Wiley & Sons 600 pp.
Nelson, J.S. 2006. Fishes of the World. Hoboken, New Jersey : John Wiley & Sons, Inc. 601 pp.
Sato, T. & Nakabo, T. 2002. Paraulopidae and Paraulopus, a new family and genus of aulopiform fishes with revised relationships within the order. Ichthyological Research 49: 25-46