†family Secuicollactidae Nazarov and Ormiston 1984 (radiolarian)

Polycystina - Archaeospicularia - Secuicollactidae

Alternative spelling: Secuicollactinae

Synonym: Pseudorotasphaeridae Noble 1994

Parent taxon: Archaeospicularia according to P. Noble et al. 2017

See also De Wever et al. 2001, Noble and Maletz 2000 and Siveter et al. 2007

Sister taxa: Archeoentactiniidae, Echidninacea, Echidninidae, Palaeospiculidae, Protoentactiniidae, Secuicollactacea

Subtaxa: Beothuca Diparvapila Intracorpus Palaeoactinosphaera Pseudorotasphaera Secuicollacta Stylactinosphaera

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Type: Secuicollacta

Ecology: passively mobile planktonic omnivore


• Silurian of Sweden (1 collection), the United Kingdom (1)

• Ordovician of the Russian Federation (1), United States (1: Nevada)

Total: 4 collections including 11 occurrences

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