Superregnum: Eukaryota
Regnum: Animalia
Phylum: Gastrotricha
Ordo: Chaetonotida
Subordo: Paucitubulatina
Familia: Chaetonotidae
Subfamilia: Undulinae
Genus: Undula
References
Primary references
Kisielewski, J. 1991. Inland-water Gastrotricha from Brazil. Annales Zoologici (Warszawa) 43 Suplement 2: 1–168. PDF Reference page.
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