†family Cyclospiridae Schuchert 1913 (lamp shell)

Rhynchonellata - Atrypida - Cyclospiridae

Parent taxon: Protozygoidea according to A. Williams et al. 2002

See also Rõõmusoks 1964

Sister taxon: Protozygidae

Subtaxa: Cyclospira Rozmanospira

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Ecology: stationary epifaunal suspension feeder

Distribution:

• Silurian of Canada (1: Northwest Territories collection), China (1), Norway (4), the United Kingdom (3)

• Ordovician of Australia (1), Belgium (5), Canada (25: Northwest Territories, Nunavut, Ontario, Quebec, Québec), China (7), the Czech Republic (3), Estonia (2), Italy (2), Norway (1), the Russian Federation (1), Sweden (2), the United Kingdom (21), United States (25: Alaska, Georgia, Illinois, Iowa, Maine, Minnesota, Oklahoma, Virginia, Wyoming)

• Llandeilo of Kazakhstan (1)

Total: 105 collections including 111 occurrences

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