†order Galeaspidiformes (vertebrate)
Petromyzontida - Galeaspidiformes
Parent taxon: Cephalaspidomorphi according to J. S. Nelson et al. 2016
See also Long 2011
Sister taxa: Gilpichthyidae, Pipisciidae, Pituriaspidiformes, Atelaspidiformes, Cephalaspidida, Ateleaspis, Birkeniiformes, Cephalaspidiformes
Subtaxa: none
Ecology: fast-moving nektonic carnivore
Distribution: there are no occurrences of Galeaspidiformes in the database