Radiolaria - Entactinaria - Saturnalidae

Full reference: E. Pessagno. 1977. Lower cretaceous radiolarian biostratigraphy of the Great Valley sequence and Franciscan complex, California coast ranges. Cushman Foundation for foraminiferal research, Special Publication (15)1-87

Parent taxon: Saturnalinae according to P. De Wever et al. 2001

Sister taxa: Acanthocircus, Aurisaturnalis, Moebicircus, Praeacanthocircus, Pseudacanthocircus, Spinoellipsella, Spongosaturninus

Subtaxa: Vitorfus campbelli, Vitorfus morini

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Type: Vitorfus campbelli

Ecology: passively mobile planktonic omnivore