Dinophyceae - Gonyaulacales - Ceratiaceae
Parent taxon: Gonyaulacales according to Taylor 1980
Sister taxa: Areoligeraceae, Balcattia, Batiacasphaera, Bourkidinium, Cerebrocysta, Chlamydophorella, Cladopyxiaceae, Cleistosphaeridium, Dapsilidinium, Dingodinium, Dissimulidinium, Ellipsoidictyum, Elytrocysta, Epiplosphaera, Flamingoia, Fusiformacysta, Gardodinium, Goniodomaceae, Gonyaulacaceae, Heslertonia, Hystrichosphaeridiaceae, Impletosphaeridium, Labyrinthodinium, Lophocysta, Membranilarnacia, Membranilarnax, Moorodinium, Papuadinium, Paucisphaeridium, Peridictyocysta, Productodinium, Reticulatosphaera, Shublikodiniaceae, Tanyosphaeridium, Tetrachacysta, Valensiella, Xiphophoridium
Subtaxa: Aptea Muderongia Odontochitina Phoberocysta Pseudoceratium Vesperopsis Xenascus
Distribution:
• Eocene of United States (1: Missouri collection)
• Paleocene of United States (6: Missouri)
• Cretaceous of Antarctica (55), Argentina (22), Brazil (38), Chile (5), Egypt (14), France (1), Greenland (1), Israel (1), the Russian Federation (4), the United Kingdom (2)
Total: 150 collections including 220 occurrences