Kaliwatan sa muragwati ang Filogranula calyculata^[1]. Una ning gihulagway ni O. G. Costa ni adtong 1861.^[2] Ang Filogranula calyculata sakop sa kahenera nga Filogranula, ug kabanay nga Serpulidae.^[1][3]

Kini nga matang hayop na sabwag sa:

• sidlakang Dagat Mediteraneo
• Dagat Amihanan
• amihanang Kadagatang Atlantiko
• Exclusive Economic Zone sa Espanya
• Wimereux
• Dagat Mediteraneo
• Wales (apil sa nasod)

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: 54376548. Retrieved 2019-11-11. {{cite web}}: |author= has generic name (help)CS1 maint: multiple names: authors list (link)
2. ↑ Bellan, G. (2001) Polychaeta, in: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification , Collection Patrimoines Naturels. 50: 214-231
3. ↑ Read G. & Fauchald K. (eds). (2019). WoRMS Polychaeta: World Polychaeta 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.