†order Ptychodiscales Fensome 1993

Dinophyceae - Ptychodiscales

Parent taxon: Dinophyceae according to Fensome 1993

Sister taxa: Actiniscales, Actinotheca, Aiora, Algidasphaeridium, Anthatractus, Apteodinium, Arcticacysta, Aremoricanium, Belodinium, Bicarinellum, Broomea, Calcicarpinium, Calcigonellum, Calciogranellum, Calcipterellum, Calcisphaerellum, Caligodinium, Cantulodinium, Ceratocoryaceae, Chiropteridium, Cryptarchaeodinium, Cymatiogalea, Danea, Diconodinium, Dictyopyxidia, Diornatosphaera, Diplotesta, Disconodinium, Distatodinium, Dollidinium, Downiesphaeridium, Echinidinium, Eodinia, Evansia, Exochosphaeridium, Favilarnax, Galea, Gillinia, Gonyaulacales, Gymnodinium, Heliodinium, Heteraulacacysta, Heterocapsaceae, Histiophora, Horologinella, Hystrichokibotium, Hystrichosphaeropsis, Invertocysta, Kofoidopsis, Komewuia, Lithodinia, Lithoperidinium, Membranophoridium, Millioudodinium, Multiplicisphaeridium, Nannoceratopsiaceae, Nannoceratopsiella, Nelsoniella, Odontochitinopsis, Oodnadattia, Ovoidinium, Palaeoglenodinium, Palaeoperidinioideae, Palaeotetradinium, Paleopedicystus, Palmnickia, Pareodiniaceae, Pentafidia, Peridiniales, Peridinites, Phanerodinium, Polyedryxium, Polykrikaceae, Polystephanephorus, Polystephanosphaera, Priscogalea, Prolixosphaeridium, Pseudodeflandrea, Pulvinosphaeridium, Raphidodinium, Rottnestia, Samlandia, Scriniocassis, Spherites, Spiniferites, Stephanelytron, Suessia, Taeniophora, Teneridinium, Tenua, Ternia, Thoracosphaerales, Toolongia, Triblastula, Trichodinium, Valvaeodinium, Vulcanisphaera, Wallodinium, Wetzeliella, Wetzelodinium, Xenicodinium, Xenikoon

Subtaxa: Ptychodiscaceae

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Distribution:

• Paleocene of United States (1: Missouri collection)

• Cretaceous of Antarctica (3), Canada (2: Manitoba, Northwest Territories), Chile (1), United States (1: Texas)

Total: 8 collections including 11 occurrences

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