Kaliwatan sa banaog ang Erylus rotundus^[1]. Una ning gihulagway ni Lendenfeld ni adtong 1910.^[2] Ang Erylus rotundus sakop sa kahenera nga Erylus, ug kabanay nga Geodiidae.^[1][3]

Kini nga matang hayop na sabwag sa:

• Hawaii

Ang kaliwatan gibahinbahin ngadto sa matang nga nahiubos:^[1]

• E. r. cidaris
• E. r. megarhabdus
• E. r. typicus

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: 53392526. Retrieved 2019-11-11. {{cite web}}: |author= has generic name (help)CS1 maint: multiple names: authors list (link)
2. ↑ Lendenfeld, R. von (1910) The Sponges. 2. The Erylidae. In: Reports on the Scientific Results of the Expedition to the Eastern Tropical Pacific, in charge of Alexander Agassiz, by the U.S. Fish Commission Steamer ‘Albatross', from October, 1904, to March, 1905, Lieut. Comm , Memoirs of the Museum of Comparative Zoology at Harvard College. 41 (2): 261-324, pls 1-8.
3. ↑ Van Soest R.W.M, Boury-Esnault N., Hooper J.N.A., Rützler K., de Voogd N.J., Alvarez B., Hajdu E., Pisera A.B., Manconi R., Schönberg C., Klautau M., Picton B., Kelly M., Vacelet J., Dohrmann M., Díaz M.-C., Cárdenas P., Carballo J. L., Ríos P. & Downey R. (2019). WoRMS Porifera: World Porifera database (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.