sentences:  Jordan and Snyder described the species as "Pristiurus eastmani" in a 1904 volume of the scientific journal "Smithsonian Miscellaneous Collections".Later authors have recognized "Pristiurus" as a junior synonym of "Galeus".A 2005 phylogenetic analysis, based on mitochondrial and nuclear DNA, found that this species, "G. gracilis", and "G. sauteri" form a clade apart from "G. melastomus" and "G. murinus".