Classification of Hyzny et al. 2012
Ph. Haptophyta Hibberd ex Cavalier-Smith 1986 [haptophyte alga]
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G. †Helicosphaera Kamptner 1954
G. Reticulofenestra Hay et al. 1966
G. †Syracosphaera Lohmann 1902
G. Umbilicosphaera Lohmann 1902