original description(ofArctobolus onondaga Cook, 1904)Cook, O. F. (1904). Myriapoda of northwestern North America. <em>Harriman Expedition 8 Insects.</em> Pt. 1: 47–82. page(s): 64 [details]
original description(ofSpirobolus orophilus Chamberlin, 1943)Chamberlin, R. V. (1943). On some genera and species of American millipeds. Bulletin of the University of Utah, Biological series, 8(2): 1-20 page(s): 9 [details]
original description(ofSpirobolus agilis Cope, 1869)Cope, E. D. (1869-1871). Synopsis of the extinct Mammalia of the cave formation in the United States, with observat. on some Myriapoda in and near the same etc. Proceedings of the American Philosophical Society, 11: 171-192 page(s): 181 [details]
original description(ofSpirobolus scotti Chamberlin, 1943)Chamberlin, R. V. (1943). Some records and descriptions of American diplopods. Proceedings of the Biological Society of Washington, 56: 143-151. Washington D.C. page(s): 148 [details]
original description(ofJulus marginatus Say, 1821)Say, T. (1821). Description of the Myriapoda of the United States. <em>Journal Acad. Nat. Sci. Philadelphia, 1st series.</em> 3: 1. page(s): 105 [details]
Present Inaccurate Introduced: alien Containing type locality