Kaliwatan sa tiladtilad ang Orthoporus fortinus^[1]. Una ning gihulagway ni Chamberlin ni adtong 1943.^[2] Ang Orthoporus fortinus sakop sa kahenera nga Orthoporus, ug kabanay nga Spirostreptidae.^[1][3]

Kini nga matang hayop na sabwag sa:

• Estado de Veracruz-Llave
• Mehiko

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: 54267502. Retrieved 2019-11-11. {{cite web}}: |author= has generic name (help)CS1 maint: multiple names: authors list (link)
2. ↑ Chamberlin, R. V. (1943) On Mexican Millipeds , Bulletin of the University of Utah, Biological series. 8(3): 1-103
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.