【膝沟藻目】
膝沟藻目（学名：Gonyaulacales）为横裂甲藻纲的一个目。
==下级分类==
本目包括以下科：
* Amphidomataceae
* Areoligeraceae
* 背洛藻科 Belodiniaceae
* 角甲藻科 Ceratiaceae
* Ceratocoryaceae
* Cladopyxidaceae
* Goniodomataceae
* 膝沟藻科 Gonyaulacaceae
* Heterodiniaceae
* Hystrichosphaeridiaceae
* Lingulodiniaceae
* Lotharingiaceae
* Mancodiniaceae
* Ostreopsidaceae
* Pareodiniaceae
* Protoceratiaceae
* Pterospermopsidaceae
* Pyrophacaceae
* Scriniocassiaceae
* Shublikodiniaceae
未指定科的属：
* Aiora R.J.Davey, 1978
* Aptodinium
* Atopodinium W.S.Drugg, 1978
* Bajociana E.A.Molinari-Novoa & M.D.Guiry, 2021
* Balcattia I.C.Cookson & A.Eisenack
* Balteocysta L.E.Stover & W.R.Evitt
* Batiacasphaera W.S.Drugg, 1970
* Boreocysta Stover & Evitt
* Bourkidinium Morgan, 1975
* Bradleyella Woollam, 1983
* Caligodinium W.S.Drugg, 1970
* Capsicocysta S.A.Warny & J.H.Wrenn, 1997
* Carnarvonodinium F.M.Parker, 1988
* Cauca R.J.Davey & J.P.Verdier, 1971
* Cerebrocysta J.P.Bujak, 1980
* Chlamydophorella Cookson & Eisenack, 1958
* Cirrusphaera Monteil, 1992
* Cleistosphaeridium R.J.Davey et al., 1966
* Cucumeridinium F.Gómez, P.López-García, H.Takayama & D.Moreira, 2015
* Dapsilidinium J.P.Bujak, C.Downie, G.L.Eaton & G.L.Williams, 1980
* Desmocysta S.Duxbury, 1983
* Dilabidinium P.Morgenroth, A.T.Rahardjo & K.A.Maryunani, 2008
* Dingodinium I.C.Cookson & A.Eisenack, 1958
* Dissimulidinium F.E.May, J.Stevens & A.D.Partridge, 1987
* Distatodinium Eaton
* Dorocysta R.J.Davey, 1970
* Duosphaeridium R.J.Davey & G.L.Williams, 1966
* Ellipsodinium R.F.A.Clarke & J.P.Verdier, 1967
* Ellipsoidictyum Klement, 1960
* Elytrocysta L.E.Stover & W.R.Evitt, 1978
* Epiplosphaera Klement
* Exochosphaeridium R.J.Davey, 1966
* Fistulacysta R.J.Davey, 1988
* Flamingoia Stevens & Helby, 1987
* Fusiformacysta Morgan, 1975
* Gagiella Backhouse, 1988
* Gardodinium G.Alberti, 1961
* Goniodinium P.A.Dangeard, 1927
* Grammatodinium Z.Li & H.H.Shin, 2017
* Gramocysta Lund & Lund-Christensen, 1990
* Hapsidaulax W.A.S.Sarjeant, 1975
* Heslertonia W.A.S.Sarjeant, 1966
* Hurlandsia J.K.Lister & D.J.Batten, 1988
* Impletosphaeridium P.Morgenroth, 1966
* Indodinium A.Kumar, 1986
* Javadinium P.Morgenroth, A.T.Rahardjo & K.A.Maryunani, 2008
* Labyrinthodinium Piasecki, 1980
* Lacunodinium He, 1984
* Laticavodinium G.J.Wilson & W.A.S.Sarjeant, 1984
* Levisphaera R.J.Davey, 1988
* Membranilarnacia Eisenack, 1963
* Mendicodinium P.Morgenroth, 1970
* Microsphaeridium P.N.von Benedek, 1972
* Minisphaeridium Fensome, Williams & MacRae, 2009
* Montanarocysta D.Corradini, 1973
* Mooradinium Backhouse, 1988
* Moorodinium Backhouse, 1988
* Neosphaerodictyon Slimani, 2003
* Omatidium B.Courtinat, 1980
* Pannosiella D.J.Batten & J.K.Lister, 1988
* Papuadinium R.J.Davey, 1988
* Parvocavatus G.U.Gitmez, 1970
* Parvulodinium L.Dodekova, 1975
* Paucibucina Jiabo, 1978
* Paucisphaeridium J.P.Bujak, C.Downie, G.L.Eaton & G.L.Williams, 1980
* Peridictyocysta I.C.Cookson & A.Eisenack, 1974
* Phanerodinium Deflandre
* Polygonifera D.Habib, 1972
* Productodinium R.J.Davey, 1988
* Pseudothecadinium Hoppenrath & Selina, 2006
* Raetiaedinium Kirsch, 1991
* Raphidodinium G.Deflandre, 1936
* Resticulasphaera Harding, 1990
* Reticulatosphaera K.Matsuoka, 1983
* Rhiptocorys Lejeune-Carpentier & Sarjeant, 1983
* Romanodinium N.Baltes, 1971
* Sahulidinium L.E.Stover & R.Helby, 1987
* Sokolovidinium J.K.Lentin & T.F.Vozzhennikova, 1990
* Spiniferopsis He, 1984
* Tanyosphaeridium R.J.Davey & G.L.Williams, 1966
* Tetrachacysta Backhouse, 1988
* Trigonopyxidia I.C.Cookson & A.Eisenack, 1961
* Valensiella Eisenack, 1963
* Warrenia Monteil, 1992
* Xiphophoridium Sarjeant, 1966
==参考文献==