†family Heterotarbidae Petrunkevitch 1913 (phalangiotarbid)
Arachnida - Phalangiotarbida - Heterotarbidae
Full reference: A. I. Petrunkevitch. 1913. A monograph of the terrestrial Palaeozoic Arachnida of North America. Transactions of the Connecticut Acadamy of Arts and Sciences 18:1-137
Parent taxon: Phalangiotarbida according to J. A. Dunlop et al. 2013
See also Petrunkevitch 1945
Sister taxa: Anthracotarbidae, Architarbidae, Devonotarbidae, Eotarbus, Eotarbus litoralis, Opiliotarbidae, Protopilio depressus
Subtaxa: Heterotarbus
Ecology:
Distribution: found only at Mazon Creek (Daniels collection) (Carboniferous of Illinois)