Trilobita - Corynexochida - Illaenidae
Parent taxon: Corynexochida according to R. A. Fortey and D. L. Bruton 2013
See also Adrain 2011, Fortey and Droser 1999, Harrington and Leanza 1957, Rabano et al. 2014 and Whittington et al. 1997
Sister taxa: Brylyella, Cheilocephalidae, Chondagraulos, Corynexochidacea, Corynexochina, Corynexochoidea, Dolichometopidae, Granularapis, Granularaspidae, Hemibarrandiidae, Hunnanocephalus, Illaenina, Illaenoidea, Leiostegiina, Phillipsinellidae, Styginidae, Xuigiella
Subtaxa: Amphoriops Bumastoides Bumastus Caryon Caudillaenus Cryptonymus Dysplanus Eastonillaenus Ectillaenus Harpillaenus Hyboaspis Illaeninae Illaenurus Illaenus Nanillaenus Octillaenus Panderinae Parillaenus Platillaenus Ptilillaenus Stenopareia Thaleops Ulugtella Zbirovia Zdicella
Ecology: nektobenthic carnivore
Distribution:
• Niagaran of United States (2: Indiana, New York collections)
• Silurian of Argentina (1), Australia (1), Canada (57: Northwest Territories, Nunavut, Ontario, Quebec, Québec, Yukon Territory), China (5), Czechia (13), Estonia (7), Greenland (6), Japan (2), Kazakhstan (1), Mexico (1), Norway (2), the Russian Federation (13), Sweden (8), Ukraine (7), the United Kingdom (20), United States (82: Arkansas, California, Illinois, Indiana, Iowa, New York, Wisconsin)
• Uhaku of Lithuania (1), the Russian Federation (3), Sweden (1)
• Dobrotivian of Czechia (1), France (2), Morocco (2), Portugal (8), Spain (12)
• Letna of Czechia (1)
• Whiterockian of Canada (58: Newfoundland, Newfoundland and Labrador, Northwest Territories, Quebec), Norway (1), United States (60: California, Nevada, New York, Oklahoma, Vermont)
• Chazyan of Canada (24: Newfoundland and Labrador, Northwest Territories, Quebec), United States (57: New York, Oklahoma, Tennessee)
• Valaste of Sweden (3)
• Hunderum of Sweden (3)
• Arenigian of China (16)
• Arenig of Argentina (5), Canada (1: Newfoundland and Labrador), China (15), Sweden (1), the United Kingdom (4)
• Dawan of China (4)
• Ordovician to Silurian of Canada (3: Québec), Norway (1)
• Ordovician of Argentina (10), Australia (11), Belarus (1), Belgium (9), Canada (76: Newfoundland, Newfoundland and Labrador, Northwest Territories, Nunavut, Nunvait, Ontario, Quebec, Québec, Yukon), China (82), Czechia (15), Estonia (10), France (1), Iran (6), Ireland (6), Italy (3), Kazakhstan (8), Lithuania (4), Malaysia (1), Morocco (12), the Netherlands (1), New Zealand (1), Norway (68), Portugal (2), the Russian Federation (38), Spain (21), Sweden (76), the United Kingdom (54), United States (115: California, Illinois, Illinois, Iowa, Iowa/Wisconsin, Kentucky, Maine, Minnesota, Missouri, Nevada, New York, Oklahoma, Tennessee, Utah, Virginia, Wisconsin)
• Canadian of China (4)
• Ibexian of United States (2: Nevada)
• Cambrian of Canada (4: Alberta), United States (16: Colorado, Minnesota, Montana, Nevada, South Dakota, Utah, Wisconsin, Wyoming)
Total: 1172 collections including 1571 occurrences