original description(ofFlagellopetalum Causey, 1951)Causey, N. B. (1951). New genera and species of chordeumoid millipeds in the United States, and notes on some established species. Proceedings of the Biological Society of Washington, 64: 117-124 page(s): 119 [details]
original description(ofTynopus Chamberlin, 1940)Chamberlin, R. V. (1940). On some chilopods and diplopods from North Carolina. Canadian Entomologist, 72: 56-59 page(s): 57 [details]
original description(ofZygonopus Ryder, 1881)Ryder, J. A. (1880). List of the North American species of the Lysiopetalidae, with a blind form, Zyganopus n.g. Proceedings of the United States National Museum, 3(1881): 524-529 page(s): 527 [details]
