Abstract Anthracomartus voelkelianus Karsch 1882 from the Pennsylvanian (Langsettian) of Nowa Ruda, Poland was listed in a 1953 monograph by Petrunkevitch as an incertae sedis species with type material possibly in Dresden. Antharcomartus voelkelianus is the type species of the genus Anthracomartus Karsch 1882 and historically one of the first described examples of the extinct order Trigonotarbida. It is a pivotal species for resolving the systematics of both Anthracomartus and a number of poorly defined, probably congeneric, taxa within Anthracomartidae. Karsch's figured types were overlooked by Petrunkevitch, but have been traced to a repository in Berlin and are redescribed here. Additional type material from Dresden and Wroclaw could not be traced. One of Karsch's figured Berlin specimens is regarded here as the holotype of A. voelkelianus, but his other figured fossil is evidently not conspecific and is tentatively referred here to Trigonotarbus sp. (Trigonotarbidae).