Albertia Dujardin, 1838 (basis of record)
Albertia crystallina Schultze, 1851 (basis of record)
Albertia ovagranulata Valovaya, 1991 (basis of record)
Anuraea aculeata Ehrenberg, 1832 accepted as Keratella quadrata quadrata Müller, 1786 (basis of record)
Anuraea cochlearis Gosse, 1851 accepted as Keratella cochlearis (Gosse, 1851) (basis of record)
Anuraeopsis fissa Gosse, 1851 (additional source)
Argonotholca foliacea (Ehrenberg, 1838) accepted as Notholca foliacea (Ehrenberg, 1838) (source of synonymy)
Ascomorpha ecaudatus Perty, 1850 accepted as Ascomorpha ecaudis Perty, 1850 (source of synonymy)
Ascomorpha ecaudis Perty, 1850 (basis of record)
Ascomorpha ovalis (Bergendahl, 1892) (additional source)
Aspelta baltica Remane, 1929 (additional source)
Aspelta clydona Harring & Myers, 1928 (additional source)
Aspelta europaea Hauer, 1939 (basis of record)
Aspelta harringi Remane, 1929 (additional source)
Aspelta pachida (Gosse, 1887) (basis of record)
Aspelta reibischi (Remane, 1929) (additional source)
Asplanchna brightwellii Gosse, 1850 (additional source)
Asplanchna herrickii De Guerne, 1888 (additional source)
Asplanchna priodonta Gosse, 1850 (additional source)
Asplanchna priodonta priodonta Gosse, 1850 accepted as Asplanchna priodonta Gosse, 1850 (source of synonymy)
Asplanchnidae Eckstein, 1883 (additional source)
Brachionidae Ehrenberg, 1838 (additional source)
Brachionus angularis Gosse, 1851 (additional source)
Brachionus angularis angularis Gosse, 1851 (additional source)
Brachionus angularis bidens Plate, 1886 (additional source)
Brachionus asplanchnoides Charin, 1947 (source of synonymy)
Brachionus calyciflorus Pallas, 1766 (additional source)
Brachionus calyciflorus calyciflorus Pallas, 1776 (additional source)
Brachionus calyciflorus f. amphiceros Ehrenberg, 1838 accepted as Brachionus calyciflorus calyciflorus Pallas, 1776 (source of synonymy)
Brachionus calyciflorus f. dorcas Gosse, 1851 accepted as Brachionus calyciflorus calyciflorus Pallas, 1776 (source of synonymy)
Brachionus diversicornis (Daday, 1883) (additional source)
Brachionus diversicornis diversicornis (Daday, 1883) accepted as Brachionus diversicornis (Daday, 1883) (source of synonymy)
Brachionus ibericus Ciros-Peréz, Gómez & Serra, 2001 (basis of record)
Brachionus leydigii Cohn, 1862 (additional source)
Brachionus leydigii f. quadratus Rousselet, 1889 accepted as Brachionus leydigii leydigii Cohn, 1862 (source of synonymy)
Brachionus leydigii leydigii Cohn, 1862 (basis of record)
Brachionus manjavacas Fontaneto, Giordani, Melone & Serra, 2007 (basis of record)
Brachionus plicatilis Müller, 1786 (additional source)
Brachionus quadridentatus Hermann, 1783 (additional source)
Brachionus quadridentatus f. ancylognathus Schmarda, 1859 accepted as Brachionus quadridentatus quadridentatus Hermann, 1783 (source of synonymy)
Brachionus quadridentatus quadridentatus Hermann, 1783 (basis of record)
Brachionus rotundiformis Tschugunoff, 1921 (basis of record)
Brachionus rubens Ehrenberg, 1838 (additional source)
Brachionus urceolaris Müller, 1773 (additional source)
Brachionus urceus (Linnaeus, 1758) accepted as Brachionus urceolaris Müller, 1773 (source of synonymy)
Cephalodella gibba (Ehrenberg, 1830) (additional source)
Cephalodella marina Myers, 1924 (basis of record)
Collotheca mutabilis (Hudson, 1885) (additional source)
Collotheca pelagica (Rousselet, 1893) (additional source)
Collothecaceae (additional source)
Colurella adriatica Ehrenberg, 1831 (additional source)
Colurella bicuspidata (Ehrenberg, 1832) accepted as Colurella uncinata bicuspidata (Ehrenberg, 1832) (source of synonymy)
Colurella colurus (Ehrenberg, 1830) (additional source)
Colurella colurus colurus (Ehrenberg, 1830) (basis of record)
Colurella dicentra (Gosse, 1887) (additional source)
Colurella halophila Wulfert, 1942 (additional source)
Colurella marinovi Althaus, 1957 (basis of record)
Colurella obtusa (Gosse, 1886) (additional source)
Colurella salina Althaus, 1957 (basis of record)
Colurella uncinata (Müller, 1773) (additional source)
Colurella uncinata bicuspidata (Ehrenberg, 1832) (basis of record)
Colurella unicauda Eriksen, 1968 (basis of record)
Conochilus hippocrepis (Schrank, 1803) (additional source)
Conochilus unicornis Rousselet, 1892 (additional source)
Dicranophoridae Harring, 1913 (additional source)
Dicranophorus Nitzsch, 1827 (basis of record)
Dicranophorus bulgaricus Althaus, 1957 (basis of record)
Dicranophorus grandis (Ehrenberg, 1832) (basis of record)
Encentrum algente Harring, 1921 (basis of record)
Encentrum ambiguum Tzschaschel, 1979 accepted as Wierzejskiella ambigua (Tzschaschel, 1979) (source of synonymy)
Encentrum arenarium Althaus, 1957 (basis of record)
Encentrum astridae Sørensen, 2001 (basis of record)
Encentrum axi Tzschaschel, 1979 (additional source)
Encentrum barti De Smet, 2000 (basis of record)
Encentrum bidentatum (Lie-Pettersen, 1906) (basis of record)
Encentrum cruentum Harring & Myers, 1928 (additional source)
Encentrum dieteri De Smet, 1995 (basis of record)
Encentrum enteromorphae Otto, 1936 (basis of record)
Encentrum eristes Harring & Myers, 1928 (basis of record)
Encentrum eulitorale Tzschaschel, 1979 (additional source)
Encentrum flexile Godske Eriksen, 1968 (basis of record)
Encentrum frenoti De Smet, 2002 (basis of record)
Encentrum graingeri Chengalath, 1985 (basis of record)
Encentrum kostei Tzschaschel, 1979 (additional source)
Encentrum kutikovae De Smet & Chernyshev, 2006 (basis of record)
Encentrum lacidum Harring & Myers, 1928 (basis of record)
Encentrum limicola Otto, 1936 (additional source)
Encentrum listense Tzschaschel, 1979 (additional source)
Encentrum listensoides De Smet, 2000 (basis of record)
Encentrum longirostrum Tzschaschel, 1979 (additional source)
Encentrum marinum (Dujardin, 1841) (additional source)
Encentrum matthesi Remane, 1949 (additional source)
Encentrum myersi Wulfert, 1936 (basis of record)
Encentrum nesites Harring & Myers, 1928 (basis of record)
Encentrum obesum Tzschaschel, 1979 (additional source)
Encentrum oculatum Harring & Myers, 1928 (basis of record)
Encentrum permutandum Tzschaschel, 1979 (additional source)
Encentrum porsildi Sørensen, 1998 (basis of record)
Encentrum psammophilum Althaus, 1957 (additional source)
Encentrum remanei Voigt, 1957 (basis of record)

 Taxonomy

 for Keratella quadrata (Müller, 1786)

The taxonomy of K. quadrata is particularly confused. Validation of the numerous proposed subspecies and ... [details]

 Taxonomy

 for Keratella quadrata platei Jägerskiöld, 1894

The taxonomy of K quadrata is particularly confused. Validation of the numerous proposed subspecies and ... [details]

 Taxonomy

 for Lecane lunaris (Ehrenberg, 1832)

Morphologically variable taxon, probably concealing cryptic species. [details]