original description
Cook, O. F.; Loomis, H. F. (1928). Millipeds of the order colobognatha, with descriptions of six new genera and type species, from Arizona and California. Proceedings of the United States National Museum, 72(18): 1-26. Washington D.C.
page(s): 15 [details]
original description
(of Calzonium Chamberlin, 1954) Chamberlin, R. V. (1954). Six new California millipeds. Proceedings of the Biological Society of Washington, 67: 231-234
page(s): 232 [details]
From editor or global species database