Subclass Myxinoidea Chester-Jones et al. 1962 (hagfish)
Parent taxon: Agnatha according to D. Dineley and S. Metcalf 1999
Sister taxa: Furcacaudiformes, Haikouichthys, Hyperoartia, Loganelliformes, Loganiida, Myllokunmingia, Myllokunmingiida, Pircanchaspis, Saarolepis, Thelodontomorphi
Subtaxa: none
Ecology:
Distribution: there are no occurrences of Myxinoidea in the database