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  Chromista
      Dinophyta
            Dinophyceae
                    Gonyaulacales
                            Ceratiaceae
                                     Amphiceratium
                                     Biceratium
                                           [Neoceratium]
                                             Biceratium furca
                                                   [Ceratophorus furca]
                                                   [Neoceratium furca]
                                                   [Peridinium furca]
                                     Ceratium
                                           [Bursaria]
                                             Ceratium [tripos] arcuatum
                                               Ceratium [tripos] arcuatum var. robusta
                                             Ceratium angustum
                                             Ceratium arcticum
                                                   [Neoceratium arcticum]
                                                   [Peridinium arcticum]
                                             Ceratium arcuatum
                                                   Ceratium arcuatum f. robustum
                                             Ceratium arietinum
                                                   [Neoceratium arietinum]
                                               Ceratium arietinum var. gracilentum
                                                     [Ceratium arietinum f. gracilentum]
                                             Ceratium aultii
                                                   [Neoceratium aultii]
                                             Ceratium axiale
                                                   [Neoceratium axiale]
                                             Ceratium azoricum
                                                   [Neoceratium azoricum]
                                             Ceratium balechii
                                                   [Neoceratium balechii]
                                                   Ceratium balechii f. longum
                                             Ceratium belone
                                                   [Neoceratium belone]
                                             Ceratium biceps
                                                   [Neoceratium biceps]
                                             Ceratium bigelowii
                                                   [Neoceratium bigelowii]
                                             Ceratium brachyceros
                                                   [Ceratium hirundella var. brachyceros]
                                             Ceratium breve
                                                   [Ceratium curvicorne]
                                                   [Ceratium tripos var. breve]
                                                   [Neoceratium breve]
                                             Ceratium brevearcuatum
                                             Ceratium brunellii
                                                   [Neoceratium brunellii]
                                             Ceratium buceros
                                                   Ceratium buceros f. tenue
                                             Ceratium candelabrum
                                                   [Neoceratium candelabrum]
                                                   [Peridinium candelabrum]
                                                   Ceratium candelabrum f. depressum
                                             Ceratium candelabum
                                               Ceratium candelabum var. depressum
                                             Ceratium carnegiei
                                                   [Neoceratium carnegiei]
                                             Ceratium carolinianum
                                                   [Ceratium curvirostre]
                                                   [Peridinium carolinianum]
                                             Ceratium carriense
                                                   [Ceratium carriense var. volans]
                                                   [Ceratium massiliense var. carriense]
                                                   [Ceratium tripos var. carriense]
                                                   [Ceratium volans]
                                                   [Neoceratium carriense]
                                                   Ceratium carriense f. hunhausenii
                                               Ceratium carriense var. massiliense
                                             Ceratium cephalotum
                                                   [Neoceratium cephalotum]
                                             Ceratium compressum
                                                   [Neoceratium compressum]
                                             Ceratium concilians
                                                   [Neoceratium concilians]
                                                   Ceratium concilians f. contortum
                                             Ceratium contortum
                                                   [Ceratium gibberum var. contortum]
                                                   [Ceratium longinum]
                                                   [Ceratium saltans]
                                                   [Ceratium tripos var. longinum]
                                                   [Neoceratium contortum]
                                               Ceratium contortum var. robustum
                                             Ceratium contrarium
                                                   [Ceratium trichoceros var. contrarium]
                                                   [Ceratium tripos var. contrarium]
                                                   [Neoceratium contrarium]
                                             Ceratium cornutum
                                                   [Peridinium carolinianum var. elongatum]
                                                   [Peridinium cornutum]
                                             Ceratium declinatum
                                                   [Neoceratium declinatum]
                                                   Ceratium declinatum f. brachiatum
                                                   Ceratium declinatum f. majus
                                                   Ceratium declinatum f. normale
                                               Ceratium declinatum var. majus
                                             Ceratium deflexum
                                                   [Ceratium macroceros subsp. deflexum]
                                                   [Neoceratium deflexum]
                                             Ceratium dens
                                                   [Neoceratium dens]
                                             Ceratium depressum
                                             Ceratium digitatum
                                                   [Neoceratium digitatum]
                                             Ceratium divaricatum
                                                   [Ceratium tripos var. divaricatum]
                                                   [Neoceratium divaricatum]
                                               Ceratium divaricatum var. balechii
                                             Ceratium egyptiacum
                                                   [Neoceratium egyptiacum]
                                             Ceratium ehrenbergii
                                             Ceratium euarcuatum
                                                   [Neoceratium euarcuatum]
                                             Ceratium extensum
                                                   [Ceratium fusus var. extensum]
                                                   [Neoceratium extensum]
                                             Ceratium falcatiforme
                                                   [Ceratium inflatum subsp. falcatiforme]
                                                   [Neoceratium falcatiforme]
                                             Ceratium falcatum
                                                   [Ceratium inflatum subsp. falcatum]
                                                   [Ceratium pennatum f. falcatum]
                                                   [Neoceratium falcatum]
                                             Ceratium filicorne
                                                   [Neoceratium filicorne]
                                             Ceratium furca
                                                   Ceratium furca f. corpulentum
                                               Ceratium furca var. belone
                                               Ceratium furca var. biceps
                                               Ceratium furca var. depressum
                                               Ceratium furca var. pentagonum
                                             Ceratium furcoides
                                                   [Ceratium furcoides f. gracile]
                                                   [Ceratium hirundinella var. furcoides]
                                             Ceratium fusus
                                                   [Amphiceratium fusus]
                                                   [Ceratophorus fusus]
                                                   [Neoceratium fusus]
                                                   [Peridinium fusus]
                                                   [Triceratium fusus]
                                               Ceratium fusus var. stricta
                                             Ceratium gallicum
                                             Ceratium geniculatum
                                                   [Ceratium fusus var. geniculatum]
                                                   [Neoceratium geniculatum]
                                             Ceratium gibberum
                                                   [Neoceratium gibberum]
                                                   Ceratium gibberum f. subaequale
                                               Ceratium gibberum var. dispar
                                                     [Ceratium tripos var. dispar]
                                               Ceratium gibberum var. subaequale
                                             Ceratium gravidum
                                                   [Neoceratium gravidum]
                                               Ceratium gravidum var. praeolongum
                                                     [Ceratium praeolongum]
                                                     [Neoceratium praeolongum]
                                             Ceratium hexacanthum
                                                   [Neoceratium hexacanthum]
                                                   Ceratium hexacanthum f. hiemale
                                                   Ceratium hexacanthum f. pavillardii
                                                         [Ceratium aestuarium var. pavillardii]
                                                   Ceratium hexacanthum f. spirale
                                                         [Ceratium reticulatum var. spirale]
                                               Ceratium hexacanthum var. aestuarium
                                                     [Ceratium aestuarium]
                                               Ceratium hexacanthum var. contortum
                                             Ceratium hircus
                                                   [Ceratium furca var. hircus]
                                                   [Neoceratium hircus]
                                             Ceratium hirundella
                                             Ceratium hirundinella
                                                   [Bursaria hirundinella]
                                                   [Ceratium brevicorne]
                                                   [Ceratium cumaonense]
                                                   [Ceratium handelii]
                                                   [Ceratium leptoceras]
                                                   [Ceratium longicorne]
                                                   [Ceratium macroceras]
                                                   [Ceratium pumilum]
                                                   [Ceratium tetraceros]
                                                   Ceratium hirundinella f. austriacum
                                                   Ceratium hirundinella f. furcoides
                                                   Ceratium hirundinella f. gracile
                                                   Ceratium hirundinella f. robustum
                                                   Ceratium hirundinella f. scoticum
                                               Ceratium hirundinella var. carinthiacum
                                               Ceratium hirundinella var. piburgense
                                               Ceratium hirundinella var. quadricornis
                                               Ceratium hirundinella var. robustum
                                               Ceratium hirundinella var. silesiacum
                                             Ceratium horridum
                                                   [Ceratium batavum]
                                                   [Ceratium inclinatum]
                                                   [Ceratium leptosomum]
                                                   [Ceratium mollis]
                                                   [Ceratium tenuissimum]
                                                   [Ceratium tripos var. horridum]
                                                   [Neoceratium horridum]
                                                   Ceratium horridum f. claviger
                                                         [Ceratium claviger]
                                               Ceratium horridum var. buceros
                                               Ceratium horridum var. tenue
                                             Ceratium humile
                                                   [Neoceratium humile]
                                             Ceratium incisum
                                                   [Ceratium furca var. incisum]
                                                   [Neoceratium incisum]
                                             Ceratium inflatum
                                                   [Ceratium pennatum f. inflata]
                                                   [Ceratium pennatum var. inflatum]
                                                   [Neoceratium inflatum]
                                             Ceratium intermedium
                                               Ceratium intermedium var. hundhausenii
                                             Ceratium karstenii
                                                   [Ceratium contortum var. karstenii]
                                                   [Neoceratium karstenii]
                                             Ceratium kofoidii
                                                   [Neoceratium kofoidii]
                                             Ceratium lanceolatum
                                                   [Neoceratium lanceolatum]
                                             Ceratium limulus
                                                   [Neoceratium limulus]
                                             Ceratium lineatum
                                                   [Biceratium lineatum]
                                                   [Neoceratium lineatum]
                                                   [Peridinium lineatum]
                                             Ceratium longipes
                                                   [Ceratium arcticum var. longipes]
                                                   [Neoceratium longipes]
                                                   [Peridinium longipes]
                                             Ceratium longirostrum
                                                   [Neoceratium longirostrum]
                                             Ceratium longissimum
                                                   [Ceratium tripos f. longissimum]
                                                   [Neoceratium longissimum]
                                             Ceratium lunula
                                                   [Neoceratium lunula]
                                                   Ceratium lunula f. brachyceros
                                                   Ceratium lunula f. megaceros
                                             Ceratium macroceros
                                                   Ceratium macroceros f. neglecta
                                               Ceratium macroceros var. gallicum
                                             Ceratium massiliense
                                                   [Ceratium tripos var. massiliense]
                                                   [Ceratium undulatum]
                                                   [Neoceratium massiliense]
                                                   Ceratium massiliense f. armatum
                                               Ceratium massiliense var. armatum
                                               Ceratium massiliense var. protuberans
                                             Ceratium minutum
                                             Ceratium monoceros
                                             Ceratium obesum
                                                   [Neoceratium obesum]
                                             Ceratium ostenfeldii
                                             Ceratium pacificum
                                             Ceratium paradoxides
                                                   [Neoceratium paradoxides]
                                             Ceratium pavillardii
                                                   [Neoceratium pavillardii]
                                             Ceratium pennatum
                                             Ceratium pentagonum
                                                   [Neoceratium pentagonum]
                                                   Ceratium pentagonum f. turgidium
                                                   Ceratium pentagonum f. turgidum
                                                         [Ceratium pentagonum var. turgidum]
                                               Ceratium pentagonum var. robustum
                                                     [Ceratium lineatum var. robustum]
                                               Ceratium pentagonum var. subrobustum
                                               Ceratium pentagonum var. tenerum
                                             Ceratium petersii
                                                   [Neoceratium petersii]
                                             Ceratium platicorne
                                                   [Neoceratium platicorne]
                                             Ceratium platycorne
                                                   Ceratium platycorne f. compressum
                                               Ceratium platycorne var. compressum
                                               Ceratium platycorne var. lamelliforme
                                             Ceratium pleuroceras
                                             Ceratium porrectum
                                                   [Neoceratium porrectum]
                                             Ceratium protuberans
                                             Ceratium pulchellum
                                                   [Ceratium tripos subsp. pulchellum]
                                                   [Ceratium tripos var. pulchellum]
                                                   [Neoceratium pulchellum]
                                                   Ceratium pulchellum f. tripodioides
                                             Ceratium ranipes
                                                   [Ceratium palmatum var. ranipes]
                                                   [Neoceratium ranipes]
                                             Ceratium recurvatum
                                                   [Neoceratium recurvatum]
                                             Ceratium reflexum
                                                   [Neoceratium reflexum]
                                             Ceratium rhomvoides
                                             Ceratium schrankii
                                                   [Neoceratium schrankii]
                                             Ceratium schroeteri
                                                   [Neoceratium schroeteri]
                                             Ceratium semipulchellum
                                             Ceratium seta
                                                   [Peridinium seta]
                                             Ceratium setaceum
                                                   [Neoceratium setaceum]
                                             Ceratium sumatranum
                                               Ceratium sumatranum var. recurvum
                                             Ceratium symmetricum
                                                   [Ceratium gracile var. symmetricum]
                                                   [Neoceratium symmetricum]
                                               Ceratium symmetricum var. coarctatum
                                                     [Ceratium coarctatum]
                                               Ceratium symmetricum var. orthoceras
                                                     [Ceratium gracile f. orthoceras]
                                             Ceratium tenue
                                                   [Neoceratium tenue]
                                             Ceratium teres
                                                   [Neoceratium teres]
                                             Ceratium trichoceros
                                                   [Neoceratium trichoceros]
                                                   [Peridinium trichoceros]
                                             Ceratium tripos
                                                   [Ceratophorus tripos]
                                                   [Cercaria tripos]
                                                   [Neoceratium tripos]
                                                   Ceratium tripos f. armatum
                                                   Ceratium tripos f. atlantica
                                                   Ceratium tripos f. contortum
                                                   Ceratium tripos f. contrarium
                                                   Ceratium tripos f. hiemale
                                                   Ceratium tripos f. intermedia
                                                   Ceratium tripos f. massiliense
                                                   Ceratium tripos f. neglectum
                                                   Ceratium tripos f. parallelogrammon
                                                   Ceratium tripos f. ponticum
                                                   Ceratium tripos f. reflexum
                                               Ceratium tripos subsp. divaricatum
                                               Ceratium tripos var. atlanticum
                                               Ceratium tripos var. gracile
                                               Ceratium tripos var. platicorne
                                               Ceratium tripos var. ponticum
                                               Ceratium tripos var. porrectum
                                               Ceratium tripos var. protuberans
                                             Ceratium uncinus
                                                   [Neoceratium uncinus]
                                             Ceratium uteri
                                             Ceratium vultur
                                                   [Ceratium japonicum]
                                                   [Ceratium recurvum]
                                                   [Ceratium tripos subsp. vultur]
                                                   [Ceratium vultur var. sumatranum]
                                                   [Neoceratium vultur]
                                                   Ceratium vultur f. sumatranum
                                     Ceratophorus
                                             Ceratophorus divergens
                                             Ceratophorus michaelis
                                             Ceratophorus tridens
                                     Dimastigoaulax
                                     Tripos

Problematic Rooting (6645)
                                             Neoceratium minutum
                                                   [Ceratium eugrammum]
                                             Neoceratium pacificum
                                             Neoceratium tasmaniae
                                                   [Ceratium tasmaniae]