original description
(of Ptyoiulus coveanus 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): 10 [details]
original description
(of Julus montanus 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]
basis of record
Shelley, R. M.; Smith, J. M. (2016). Parajulid milliped studies XII: Initial assessment of <em>Ptyoiulus</em> Cook 1895 and neotype designations for <em>Julus impressus</em> Say 1821 and <em>J. montanus</em> Cope 1869 (Diplopoda: Julida). <em>Insecta Mundi.</em> (0522): 1-21., available online at https://digitalcommons.unl.edu/insectamundi/1027/
page(s): 15-18, Figures 6, 15–22. [details] Available for editors 
From editor or global species database