Diagnosis of the family Dakoticancridae
Carapace rectangular to transversely ovoid, relatively equant; rostrum narrow, bilobed; orbits well developed, rimmed; eyes sheltered by orbits when retracted; median part of cardiac groove weak, gastric regions hardly separated from cardiac intestinal region, branchiocardiac groove well developed, pleural sutures located on carapace sides; genital openings on coxae, female on third leg and male of the fifth; fifth legs much reduced. Sternum of female without longitudinal grooves. Chelae equal. (Rathbun 1917; 385; Glaessner 1969; Bishop, 1983c: 424).