Kaliwatan sa tiladtilad ang Orthoporus cienogonus^[1]. Una ning gihulagway ni Chamberlin ni adtong 1952.^[2] Ang Orthoporus cienogonus sakop sa kahenera nga Orthoporus, ug kabanay nga Spirostreptidae.^[1][3] Walay nalista nga matang nga sama niini.^[1]

1. ↑ ^{1.0 1.1 1.2} Roskov Y., Kunze T., Orrell T., Abucay L., Paglinawan L., Culham A., Bailly N., Kirk P., Bourgoin T., Baillargeon G., Decock W., De Wever A., Didžiulis V. (ed) (2019). "Species 2000 & ITIS Catalogue of Life: 2019 Annual Checklist". Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-884X. TaxonID: 54267484. Retrieved 2019-11-11. {{cite web}}: |author= has generic name (help)CS1 maint: multiple names: authors list (link)
2. ↑ Chamberlin, R. V. (1952) Further records and descriptions of American millipeds , Great Basin Naturalist. 12: 13-34. Provo
3. ↑ Sierwald P. & Spelda J. (2019). WoRMS MilliBase: MilliBase (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2019 Annual Checklist (Roskov Y., Ower G., Orrell T., Nicolson D., Bailly N., Kirk P.M., Bourgoin T., DeWalt R.E., Decock W., Nieukerken E. van, Zarucchi J., Penev L., eds.). Digital resource at www.catalogueoflife.org/annual-checklist/2019. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-884X.