Amphidinium Claperède & Lachmann, 1859 (additional source)
Amphidinium aculeatum Daday, 1888 (additional source)
Amphidinium aculeatum Schröder, 1911 accepted as Amphidinium adriaticum Molinari & Guiry, 2021 (additional source)
Amphidinium asymmetricum Kofoid & Swezy, 1921 (original description)
Amphidinium corpulentum Kofoid & Swezy, 1921 (original description)
Amphidinium crassum Lohmann, 1908 (additional source)
Amphidinium cucurbita Kofoid & Swezy, 1921 (original description)
Amphidinium cucurbitella Kofoid & Swezy, 1921 (original description)
Amphidinium dentatum Kofoid & Swezy, 1921 (original description)
Amphidinium discoidalis (Diesing) Kofoid & Swezy (additional source)
Amphidinium emarginatum (Diesing) Kofoid & Swezy, 1921 (additional source)
Amphidinium fastigium Kofoid & Swezy, 1921 (original description)
Amphidinium galbanum Kofoid & Swezy, 1921 (original description)
Amphidinium globosum Schröder, 1911 (additional source)
Amphidinium herdmanii Kofoid & Swezy, 1921 (original description)
Amphidinium klebsii Kofoid & Swezy, 1921 (original description)
Amphidinium lacustre F.Stein, 1883 accepted as Prosoaulax lacustris (F.Stein) Calado & Moestrup, 2005 (additional source)
Amphidinium lanceolatum Schröder, 1911 (additional source)
Amphidinium longum Lohmann, 1908 (additional source)
Amphidinium operculatum Claparède & Lachmann, 1859 (additional source)
Amphidinium ovoideum (Lemmermann) Lemmermann, 1900 (additional source)
Amphidinium pacificum Kofoid & Swezy (original description)
Amphidinium rotundatum Lohmann, 1908 accepted as Heterocapsa rotundata (Lohmann) Gert Hansen, 1995 (additional source)
Amphidinium scissum Koifoid & Swezy, 1921 (original description)
Amphidinium steinii (Lemmermann) Kofoid & Swezy, 1921 (ecology source)
Amphidinium sulcatum Kofoid, 1907 (additional source)
Amphidinium truncatum Kofoid & Swezy, 1921 (original description)
Amphidinium turbo Kofoid & Swezy, 1921 (original description)
Amphidinium vasculum Kofoid & Swezy, 1921 accepted as Balechina gracilis (Bergh) F.Gómez, Artigas & Gast, 2021 (original description)
Cochlodinium Schütt, 1896 (additional source)
Cochlodinium archimedes (Pouchet) Lemmermann, 1899 (additional source)
Cochlodinium atromaculatum Kofoid & Swezy, 1921 (original description)
Cochlodinium augustum Kofoid & Swezy, 1921 accepted as Cochlodinium brandtii Wulff, 1916 (original description)
Cochlodinium catenatum Okamura, 1916 accepted as Margalefidinium catenatum (Okamura) F.Gómez, Richlen & D.M.Anderson, 2017 (additional source)
Cochlodinium cavatum Kofoid & Swezy, 1921 (original description)
Cochlodinium cereum Kofoid & Swezy, 1921 (original description)
Cochlodinium citron Kofoid & Swezy, 1921 accepted as Margalefidinium citron (Kofoid & Swezy) F.Gómez, Richlen & D.M.Anderson, 2017 (original description)
Cochlodinium clarissimum Kofoid & Swezy, 1921 (original description)
Cochlodinium conspiratum Kofoid & Swezy, 1921 (original description)
Cochlodinium constrictum (Schütt) Lemmennann, 1899 (additional source)
Cochlodinium convolutum Kofoid & Swezy, 1921 (original description)
Cochlodinium distortum Kofoid & Swezy, 1921 (original description)
Cochlodinium elongatum Kofoid & Swezy, 1921 (original description)
Cochlodinium faurei Kofoid & Swezy, 1921 (original description)
Cochlodinium geminatum (Schütt) Schütt, 1896 accepted as Polykrikos geminatus (Schütt) D.Qiu & S.Lin, 2013 (additional source)
Cochlodinium helix (Pouchet) Lemmermann, 1899 (additional source)
Cochlodinium lebourae Kofoid & Swezy, 1921 (original description)
Cochlodinium miniatum Kofoid & Swezy, 1921 (original description)
Cochlodinium pellucidum Lohmann, 1908 (additional source)
Cochlodinium pirum (Schütt) Lemmermann, 1921 (additional source)
Cochlodinium pulchellum Lebour, 1917 (additional source)
Cochlodinium radiatum Kofoid & Swezy, 1921 (original description)
Cochlodinium rosaceum Kofoid & Swezy, 1921 (original description)
Cochlodinium schuettii Kofoid & Swezy, 1921 (original description)
Cochlodinium scintillans Kofoid & Swezy, 1921 (original description)
Cochlodinium strangulatum (F.Schütt) F.Schütt, 1896 (additional source)
Cochlodinium turbineum Kofoid & Swezy, 1921 (original description)
Cochlodinium vinctum Kofoid & Swezy, 1921 (original description)
Cochlodinium virescens Kofoid & Swezy, 1921 (original description)
Cochlodinium volutum Kofoid & Swezy, 1921 (original description)
Dinoflagellata (additional source)
Erythropsis Hertwig, 1884 accepted as Erythropsidinium P.C.Silva, 1960 (additional source)
Erythropsis agilis Hertwig, 1884 accepted as Erythropsidinium agile (Hertwig) P.C.Silva, 1960 (additional source)
Erythropsis cornuta (Schütt) Kofoid & Swezy accepted as Erythropsidinium agile (Hertwig) P.C.Silva, 1960 (additional source)
Erythropsis extrudens Kofoid & Swezy, 1921 accepted as Erythropsidinium extrudens (Kofoid & Swezy) P.C.Silva, 1960 (original description)
Erythropsis pavillardii Kofoid & Swezy accepted as Erythropsidinium agile (Hertwig) P.C.Silva, 1960 (original description)
Gymnodiniidae accepted as Gymnodiniaceae Lankester, 1885 (additional source)
Gymnodinium F.Stein, 1878 (additional source)
Gymnodinium abbreviatum Kofoid & Swezy, 1921 (original description)
Gymnodinium achromaticum Lebour, 1917 (additional source)
Gymnodinium adriaticum (Schmarda) Kofoid & Swezy, 1921 (additional source)
Gymnodinium aeruginosum F.Stein, 1883 accepted as Nusuttodinium aeruginosum (F.Stein) Y.Takano & T.Horiguchi, 2014 (additional source)
Gymnodinium agile Kofoid & Swezy, 1921 accepted as Durinskia agilis (Kofoid & Swezy) Saburova, Chomérat & Hoppenrath, 2012 (original description)
Gymnodinium amphora Kofoid & Swezy, 1921 (original description)
Gymnodinium attenuatum Kofoid & Swezy, 1921 (original description)
Gymnodinium auratum Kofoid & Swezy, 1921 (original description)
Gymnodinium aureum Kofoid & Swezy, 1921 (original description)
Gymnodinium bicaudatum Pavillard, 1905 (additional source)
Gymnodinium biciliatum Ohno, 1911 (additional source)
Gymnodinium bicorne Kofoid & Swezy, 1921 (original description)
Gymnodinium bifurcatum Kofoid & Swezy, 1921 (original description)
Gymnodinium bogoriense G.A.Klebs, 1912 (additional source)
Gymnodinium canus Kofoid & Swezy, 1921 (original description)
Gymnodinium carinatum A.J.Schilling, 1891 accepted as Gymnodinium palustre A.J.Schilling, 1891 (additional source)
Gymnodinium cinctum Kofoid & Swezy, 1921 (original description)
Gymnodinium coeruleum Dogiel, 1906 accepted as Balechina coerulea (Dogiel) F.J.R.Taylor, 1976 accepted as Cucumeridinium coeruleum (Dogiel) F.Gomez, P.López-García, H.Takayama & D.Moreira, 2015 (additional source)
Gymnodinium conicum Kofoid & Swezy, 1921 accepted as Spatulodinium pseudonoctiluca (Pouchet) J.Cachon & M.Cachon, 1968 (original description)
Gymnodinium contractum Kofoid & Swezy, 1921 (original description)
Gymnodinium corpusculum (Perty) W.S.Kent, 1881 (additional source)
Gymnodinium costatum Kofoid & Swezy, 1921 (original description)
Gymnodinium cucumis Schütt, 1895 (additional source)
Gymnodinium diploconus Schütt, 1895 (additional source)
Gymnodinium dissimile Kofoid & Swezy, 1921 (original description)
Gymnodinium dogielii Kofoid & Swezy, 1921 (original description)
Gymnodinium doma Kofoid & Swezy, 1921 (original description)
Gymnodinium filum Lebour, 1917 (additional source)
Gymnodinium flavum Kofoid & Swezy, 1921 (original description)
Gymnodinium fulgens Kofoid & Swezy, 1921 (original description)
Gymnodinium fuscum (Ehrenberg) F.Stein, 1878 (additional source)
Gymnodinium fusus Schütt, 1896 (additional source)

 Description

 for Amphidinium klebsii Kofoid & Swezy, 1921

The body is subcylindrical (dorsoventrally compressed?), rounded posteriorly, subtruncate anteriorly with the ... [details]

 Diagnosis

 for Amphidinium klebsii Kofoid & Swezy, 1921

A small species, with subcylindrical body, its length 1.72 transdiameters; girdle anterior ; chromatophores (?). ... [details]