• Rhizosolenia C.G. Ehrenberg, 1843 † accepted as Pseudopyxilla Forti, 1909 † [Family: Pyxillaceae]
• Rhizosolenia T. Brightwell, 1858 [Family: Rhizosoleniaceae]
• Rhizosolenia acicularis B.G. Sundström, 1986
• Rhizosolenia acuminata (H. Peragallo) Gran, 1905
• Rhizosolenia acuminata (H. Peragallo) H. Peragallo, 1907
• Rhizosolenia africana J. Woloszynska
• Rhizosolenia africana Karsten
• Rhizosolenia alata Brightwell, 1858 accepted as Proboscia alata (Brightwell) Sundström, 1986
• Rhizosolenia amaralis G.M. Hallegraeff & D.R.A. Hill in Hallegraeff et al., 2010
• Rhizosolenia americana C.G. Ehrenberg, 1844
• Rhizosolenia amputata Ostenfeld, 1902 accepted as Rhizosolenia bergonii H. Peragallo, 1892
• Rhizosolenia annulata G.H.H. Karsten
• Rhizosolenia antarctica Karsten, 1905 accepted as Guinardia cylindrus (P.T. Cleve) Hasle, 1996
• Rhizosolenia antennata (Ehrenberg) N.E. Brown, 1920
• Rhizosolenia antennula accepted as Rhizosolenia antennata (Ehrenberg) N.E. Brown, 1920
• Rhizosolenia arafurensis Castracane, 1886
• Rhizosolenia arafurensis E.J.F. Wood
• Rhizosolenia atlantica H. Peragallo
• Rhizosolenia barbata Ehrenberg
• Rhizosolenia barboi
• Rhizosolenia bella A.P. Jousé
• Rhizosolenia bergonii H. Peragallo, 1892
• Rhizosolenia bezrukovae A.P. Jousé
• Rhizosolenia bidens Karsten accepted as Rhizosolenia antennata (Ehrenberg) N.E. Brown, 1920
• Rhizosolenia blavyana (H. Peragallo) E. Steemann Nielsen
• Rhizosolenia borealis B.G. Sundström, 1986
• Rhizosolenia braunii F. Hustedt
• Rhizosolenia bulbosa H.J. Schrader
• Rhizosolenia calcar avis Schultze, 1858 accepted as Pseudosolenia calcar-avis (Schultze) B.G. Sundström, 1986
• Rhizosolenia calcaravis M. Schultze, 1858
• Rhizosolenia calcar-avis Schultze, 1858
• Rhizosolenia calyptra Ehrenberg
• Rhizosolenia campana Ehrenberg
• Rhizosolenia castracanei Cleve, 1889 accepted as Guinardia flaccida (Castracane) H. Peragallo, 1892
• Rhizosolenia castracanei H. Peragallo, 1888
• Rhizosolenia castracani H. Peragallo
• Rhizosolenia chunii Karsten, 1905
• Rhizosolenia clevei Ostenfeld, 1902
• Rhizosolenia cochlea J.-J. Brun
• Rhizosolenia corpulenta (Cleve) Cleve
• Rhizosolenia costata R. Gersonde †
• Rhizosolenia crassa Schimper, 1905
• Rhizosolenia crassispina J.L.B. Schröder
• Rhizosolenia cretacea M. Hajós & H. Stradner †
• Rhizosolenia curva Karsten, 1905 accepted as Rhizosolenia curvata Zacharias, 1905
• Rhizosolenia curvata Zacharias, 1905
• Rhizosolenia curvatulus E.J.F. Wood
• Rhizosolenia curvicornis V. Hensen
• Rhizosolenia curvirostris A.P. Jousé
• Rhizosolenia curviseta F. Hustedt
• Rhizosolenia cylindrus Cleve, 1897 accepted as Guinardia cylindrus (P.T. Cleve) Hasle, 1996
• Rhizosolenia debyana H. Peragallo, 1892
• Rhizosolenia decipiens B.G. Sundström, 1986
• Rhizosolenia delicatula Cleve, 1900 accepted as Guinardia delicatula (Cleve) G.R. Hasle, 1997
• Rhizosolenia drafurensis Castracane
• Rhizosolenia eriense
• Rhizosolenia eriensis H.L. Smith, 1872 accepted as Urosolenia eriensis (H.L. Smith) F.E. Round & R.M. Crawford, 1990
• Rhizosolenia faeroensis Ostenfeld, 1903
• Rhizosolenia fallax Sundström, 1986
• Rhizosolenia firma G.H.H. Karsten
• Rhizosolenia flaccida Castracane, 1886 accepted as Guinardia flaccida (Castracane) H. Peragallo, 1892
• Rhizosolenia formosa H. Peragallo
• Rhizosolenia fragilissima Bergon, 1903 accepted as Dactyliosolen fragilissimus (Bergon) Hasle, 1996
• Rhizosolenia fragillima H.H. Gran
• Rhizosolenia gigantea V. Hensen
• Rhizosolenia gracilis H.L. Smith, 1882
• Rhizosolenia gracillima Cleve, 1881 accepted as Rhizosolenia alata Brightwell, 1858 accepted as Proboscia alata (Brightwell) Sundström, 1986
• Rhizosolenia gravida A.M. Gombos, Jr. & P.F. Ciesielski
• Rhizosolenia guldbergiana H.H. Gran & B. Ruud
• Rhizosolenia hastata Grunow
• Rhizosolenia hebatata
• Rhizosolenia hebetata J.W. Bailey, 1856
• Rhizosolenia hemiaulus V. Hensen
• Rhizosolenia hensenii Schütt, 1900 accepted as Rhizosolenia setigera Brightwell, 1858
• Rhizosolenia hiemalis V. Hensen
• Rhizosolenia hotaensis F. Akiba
• Rhizosolenia hyalina Ostenfeld, 1901
• Rhizosolenia imbricata Brightwell, 1858
• Rhizosolenia inaequalis F.S. Castracane degli Antelminelli
• Rhizosolenia indica H. Peragallo, 1892 accepted as Rhizosolenia alata Brightwell, 1858 accepted as Proboscia alata (Brightwell) Sundström, 1986
• Rhizosolenia inermis F. Castracane, 1886 accepted as Proboscia inermis (F. Castracane) R.W. Jordan & R. Ligowski, 1991
• Rhizosolenia interposita M. Hajós †
• Rhizosolenia japonica Castracane, 1886 accepted as Rhizosolenia setigera Brightwell, 1858
• Rhizosolenia karsteni F. Hustedt
• Rhizosolenia laevis H. Peragallo
• Rhizosolenia lata V. Hensen
• Rhizosolenia longiseta O. Zacharias, 1893
• Rhizosolenia magna G.I. Hansen
• Rhizosolenia magna H.H.W.T. Stüwe
• Rhizosolenia massiva H.J. Schrader
• Rhizosolenia melo (Ehrenberg) Ehrenberg
• Rhizosolenia minima Levander, 1904
• Rhizosolenia miocenica H.J. Schrader
• Rhizosolenia morsa W. West & G.S. West
• Rhizosolenia murrayana Castracane, 1886 accepted as Rhizosolenia chunii Karsten, 1905
• Rhizosolenia naui I.A. Kisselev
• Rhizosolenia norwegica H.J. Schrader
• Rhizosolenia nova V. Hensen
• Rhizosolenia obtusa Hensen, 1887 accepted as Proboscia eumorpha K. Takahashi, R.W. Jordan & J. Priddle, 1994
• Rhizosolenia oligocaenica H.-J. Schrader