Full reference: C. D. Walcott. 1899. Pre-Cambrian fossiliferous formations. Bulletin of the Geological Society of America 10:199-244
Parent taxon: Acritarcha according to G. Vidal 1990
See also Andrews 1970 and Knoll and Calder 1983
Sister taxa: Acanthodiacrodium, Acanthorytidodiacrodium, Acanthozonodiacrodium, Angularia, Appendisphaera, Applanopsis, Archaeodiscina, Archaeofavosina, Archaeohystrichosphaeridium, Archaeoperisaccus, Archaeopertusina, Artemisiocysta, Ascostomocystis, Asperatopsophosphaera, Asseserium, Asteridium, Athabascaella, Bacillidinium, Bacisphaeridium, Baltisphaeridium, Bavlinella, Brochopsophosphaera, Buedingiisphaeridium, Caldariola, Ceratocystidiopsis, Ceratosphaeridium, Circulisporites, Cirrifera, Clavaticystis, Codonia, Codoniella, Comasphaeridium, Concentricystes, Coronopsis, Cristallinium, Cyclodictyon, Cyclopsiella, Cymatiosphaera, Cymatiosphaeroides, Dasydiacrodium, Dasyrytidodiacrodium, Deunffia, Dictyosphaeridium, Dictyotidium, Dimastigobolus, Diplofusa, Disphaeria, Domasia, Domasiella, Epicephalopyxis, Estiastra, Eupoikilofusa, Filisphaeridium, Fromea, Gemmuloides, Gorgonisphaeridium, Granodiscus, Granomarginata, Halodinium, Halophoridia, Heliosphaeridium, Kildinella, Korilophyton, Korojonia, Lacunalites, Leiofusa, Leiomarginata, Leiominuscula, Leiopsophosphaera, Leiosphaera, Leiosphaeridium, Limbicysta, Lophodiacrodium, Lophominuscula, Lophorytidodiacrodium, Lophosphaeridium, Lophozonodiacrodium, Lunulidia, Lusatia, Margominuscula, Mecsekia, Megasacculina, Membranolimbus, Membranosphaera, Micrhystridium, Microconcentrica, Microforaminiferal, Microrugosina, Multifronsphaeridium, Nucellosphaeridium, Nummus, Ocalasphaera, Odontothrix, Ooidium, Operculites, Ophiobolus, Orygmatosphaeridium, Palaeobion, Palaeocryptidium, Palaeostomocystis, Paucilobimorpha, Peteinosphaeridium, Piperodinium, Platycystidia, Poikilofusa, Polyedrosphaeridium, Priscotheca, Protoarchaeosacculina, Protocridosphaeridium, Protoleiosphaeridium, Protosphaeridium, Prototrematosphaeridium, Pterocystidiopsis, Pterospermopsis, Pterosphaeridia, Quadrina, Quisquilites, Recticystis, Retisphaeridium, Rhombodella, Rhopaliophora, Schismatosphaeridium, Schizocystia, Schizofusa, Simia, Simsangia, Singraulipollenites, Solisphaeridium, Spicadinium, Staplinium, Stictosphaeridium, Stylodiniopsis, Symplassosphaeridium, Synsphaeridium, Tanarium, Tenuirica, Tetrabrachiophora, Trachydiacrodium, Trachyhystrichosphaera, Trachysphaeridium, Trematosphaeridium, Trigonopyxidia, Trigonopyxis, Variomargosphaeridium, Vavososphaeridium, Veryhachium, Wilsonastrum, Zonooidium, Zonosphaeridium
Subtaxa: Chuaria circularis Chuaria pendjariensis
Distribution:
• Cambrian of Iran (1 collection)
• Ediacaran of Burkina Faso (1), Canada (3: Nunavut), China (4), Iran (3), Namibia (1), Spain (1)
• Neoproterozoic of China (1)
• Tonian of Canada (6: Northwest Territories), the Russian Federation (1), Svalbard and Jan Mayen (1), United States (2: Arizona, Utah)
• Statherian of China (5)
Total: 30 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.