Parent taxon: Eukaryota according to E. Taylor et al. 2008
Sister taxa: Acritarcha, Allonema, Archaeplastida, Birrindudutuba, Changchengia, Chlorobiota, Chromalveolata, Chromista, Conglobocella, Cucumiforma, Dictyosphaera, Dinophyta, Euglenophyta, Filinexum, Gigantosphaeridium, Kamolineata, Leiothrichoides, Limbunyasphaera, Palaeosiphonella, Plantae, Protista, Protozoa, Rhizopodea, Sarcomastigophora, Satka, Sinosabelliditida, Siphonoseptum, Soldadotubulus, Spiromorpha, Stramenopila, Tappania, Tuanshanzia, Valeria, Waltheria
Subtaxa: Coccolithophorales
Distribution:
• Eocene of North Pacific (1 collection), Ukraine (1)
• Paleocene of South Atlantic (1)
• Cretaceous of United States (1: Nebraska)
Total: 4 collections each including a single occurrence