Parent taxon: Pentameridina according to A. Williams et al. 2002
See also Rasmussen et al. 2010
Sister taxa: Gypiduloidea, Pentameroidea, Stricklandioidea
Subtaxa: Clorindidae
Ecology: stationary epifaunal suspension feeder
Distribution:
• Givetian of United States (1: Missouri collection)
• Devonian of Canada (14: Northwest Territories, Ontario, Yukon), China (2), Czechia (18), Germany (1), Kazakhstan (1), Morocco (3), the Russian Federation (25), Tajikistan (2), Ukraine (8), United States (119: Alaska, Indiana, Iowa, Michigan, Missouri, Nevada, New York, Pennsylvania, Wisconsin), Uzbekistan (1)
• Whitwellian of Canada (2: Northwest Territories)
• Jaani of Lithuania (2)
• Niagaran of Canada (2: Québec)
• Silurian of Afghanistan (1), Australia (3), Canada (60: British Columbia, Northwest Territories, Nunavut, Ontario, Quebec, Québec, Yukon), Czechia (13), Estonia (11), Iran (1), Latvia (1), Lithuania (13), Norway (24), the Russian Federation (20), Sweden (13), Ukraine (1), the United Kingdom (62), United States (46: Alaska, Arkansas, California, Illinois, Indiana, Iowa, Nevada, New York, Oklahoma, Wisconsin), Venezuela (1)
• Ordovician to Silurian of Norway (1)
• Ordovician of Sweden (2)
Total: 474 collections including 548 occurrences