Dodatak:Popis vrsta kolnjaka:K
Kellicottia Ahlstrom, 1938
uredi- Kellicottia bostoniensis (Rousselet 1908)
- Kellicottia longispina (Kellicott 1879)
Animalia → Rotifera → Eurotatoria → Ploima → Brachionidae
- Keratella ahlstromi Russell 1951
- Keratella americana Carlin 1943
- Keratella armadura Stemberger 1990
- Keratella australis Berzinš 1963
- Keratella canadensis Berzinš 1954
- Keratella cochlearis (Gosse 1851)
- Keratella cochlearis cochlearis (Gosse 1851)
- Keratella cochlearis pachyacantha Thomasson 1851
- Keratella cochlearis polaris De Smet & Bafort 1851
- Keratella crassa Ahlstrom 1943
- Keratella cruciformis (Thompson 1892)
- Keratella earlinae Ahlstrom 1943
- Keratella edmondsoni Ahlstrom 1943
- Keratella eichwaldi (Levander 1894)
- Keratella hiemalis Carlin 1943
- Keratella irregularis (Lauterborn 1898)
- Keratella javana Hauer 1937
- Keratella kostei Paggi 1981
- Keratella lenzi Hauer 1953
- Keratella maliensis Koste & Tobias 1987
- Keratella mexicana Kutikova & Silva-Briano 1995
- Keratella mixta (Oparina-Charitonova 1924)
- Keratella mongoliana Segers & Rong 1998
- Keratella morenoi Modenutti, Diéguez & Segers 1998
- Keratella nhamundaiensis Koste 1982
- Keratella ona Boltovskoy & Urrejola 1977
- Keratella paludosa (Lucks 1912)
- Keratella procurva (Thorpe 1891)
- Keratella procurva haterumensis Sudzuki 1891
- Keratella procurva procurva (Thorpe 1891)
- Keratella procurva robusta Koste & Shiel 1891
- Keratella quadrata (Müller 1786)
- Keratella quadrata dispersa Carlin 1786
- Keratella quadrata quadrata (Müller 1786)
- Keratella reducta (Huber-Pestalozzi 1929)
- Keratella sancta Russell 1944
- Keratella serrulata (Ehrenberg 1838)
- Keratella shieli Koste 1979
- Keratella sinensis Segers & Wang 1997
- Keratella slacki Berzinš 1963
- Keratella taksinensis Chittapun, Pholpunthin & Segers 2002
- Keratella taurocephala Myers 1938
- Keratella tecta (Gosse 1851)
- Keratella testudo (Ehrenberg 1832)
- Keratella thomassoni Hauer 1958
- Keratella ticinensis (Callerio 1920)
- Keratella trapezoida Zhuge & Huang 1998
- Keratella tropica (Apstein 1907)
- Keratella valdiviensis Thomasson 1957
- Keratella valga (Ehrenberg 1834)
- Keratella wangi Zhuge & Huang 1997
- Keratella yamana Boltovskoy & Urrejola 1977
- Keratella zhugeae Segers & Rong 1998
Animalia → Rotifera → Eurotatoria → Ploima → Brachionidae
- Kostea wockei (Koste 1961)
Animalia → Rotifera → Eurotatoria → Ploima → Dicranophoridae