Presumed relationships between the species of the genus "Bellacartwrightia" and its closest relatives, all belonging to the trilobite subfamily Asteropyginae (Phacopida). "B. pleione", which probably belongs to "Bellacartwrightia", was not included in the phylogenetic analysis because the cephalon is unknown. The early occurence of "B. pleione" however makes a position near the base of the genus more probable. Based on Lieberman, B.S. and G.J. Kloc (1997). Evolutionary and biogeographical patterns in the Asteropyginae (Trilobita, Devonian) Delo, 1935. "in" Bulletin of the American Museum of Natural History "232".