Dodatak:Popis trbodlaka, U
Un uredi
Undula Kisielewski, 1991 uredi
- Undula paraensis Kisielewski, 1991
Animalia → Gastrotricha → Chaetonotida → Chaetonotidae → Undulinae
Podporodica Undulinae Kisielewski, 1991 uredi
- Rod: Undula
Animalia → Gastrotricha → Chaetonotida → Paucitubulatina → Chaetonotidae
Ur uredi
Urodasys Remane, 1926 uredi
- Urodasys acanthostylis Fregni, Tongiorgi & Faienza, 1998
- Urodasys anorektoxys Todaro, Bernhard & Hummon, 2000
- Urodasys apuliensis Fregni, Faienza, Grimaldi, Tongiorgi & Balsamo, 1999
- Urodasys bucinastylis Fregni, Faienza, Grimaldi, Tongiorgi & Balsamo, 1999
- Urodasys calicostylis Schoepfer-Sterrer, 1974
- Urodasys cornustylis Schoepfer-Sterrer, 1974
- Urodasys elongatus Renaud-Mornant, 1969
- Urodasys mirabilis Remane, 1926
- Urodasys nodostylis Schoepfer-Sterrer, 1974
- Urodasys poculostylis Atherton, 2014
- Urodasys remostylis Schoepfer-Sterrer, 1974
- Urodasys spirostylis Schoepfer-Sterrer, 1974
- Urodasys toxostylus Hummon, 2011
- Urodasys uncinostylis Fregni, Tongiorgi & Faienza, 1998
- Urodasys viviparus Wilke, 1954