Protozoa - Archaeospicularia - Echidninidae
Full reference: H. W. Kozur, H. Mostler, and J. E. Repetski. 1996. Well-preserved Tremadocian primitive Radiolaria from the Windfall Formation of the Antelope Range, Eureka County, Nevada, USA. Geol Paläont Mitt Innsbruck 21:245-271
Parent taxon: Archaeospicularia according to P. Noble et al. 2017
See also De Wever et al. 2001, Kozur et al. 1996, Won and Iams 2002 and Won et al. 2007
Sister taxa: Archeoentactiniidae, Echidninacea, Palaeospiculidae, Protoentactiniidae, Secuicollactacea, Secuicollactidae
Subtaxa: Altaiesphaera Cancellisphaera Curvechidnina Echidnina Gigantospiculum Grosmorneus Neoechidnina Parechidnina Subechidnina Varispiculum Westernbrookia
Ecology: passively mobile planktonic omnivore
Distribution:
• Ordovician of Canada (2: Newfoundland and Labrador collections)
• Tremadoc of United States (1: Nevada)
• Cambrian of Australia (1), Canada (7: Newfoundland and Labrador)
Total: 11 collections including 56 occurrences