Hyolitha - Hyolithida - Hyolithidae
Parent taxon: Hyolithida according to J. M. Malinky 1990
See also Benson et al. 1961, Henningsmoen 1952 and Kruse 2002
Sister taxa: Aimitus, Aladracina, Altaicornus, Amydaicornus, Anabaricornus, Angusticornidae, Angusticornus, Atdabanithidae, Australothecidae, Bolithes, Borealicornus, Brevilabiatus, Carinolithidae, Cavernolites, Crestjahitidae, Crestjahitus, Decipilites, Doescherina, Emarites, Erraticornus, Firmicornus, Galicornus, Glossolites, Gompholites, Goniocornus, Grantitheca, Hyolithina, Hyptiotheca, Ingolitotheca, Insignicornus, Insolitotheca, Jacuticornus, Jacutolitus, Jincelites, Joachimilites, Ketemecornus, Kuonamkicornus, Lathamoserpens, Laticornus, Lenalitus, Lirotheca, Matthevina, Maxilites, Meitanovitus, Microcornus, Nelegerocornidae, Nitoricornus, Notabilitus, Oblisicornus, Oxytus, Paracornus, Parakolithes, Parakorilithes, Parentilitidae, Parkula, Patholites, Pauxillites, Pauxillitidae, Rarissimetus, Rodentilites, Similothecidae, Slapylitidae, Tajinella, Tizilites, Tulenicornus, Virgatotheca, Yacutolithuus
Subtaxa: Elegantilites Hallotheca Haplophrentis Helenia Hyolithes Korilithes Nevadotheca Novakotheca Sololites Yalarrnga
Type: Hyolithes
Ecology: facultatively mobile epifaunal suspension feeder
Distribution:
• Permian of Australia (1 collection), Madagascar (1)
• Carboniferous of Argentina (4), Australia (2), United States (4: California, Indiana, Virginia)
• Devonian of Australia (7), Brazil (8), Canada (1: Quebec), Ghana (1), Morocco (1), South Africa (6), Spain (1), United States (18: Illinois, New York, Pennsylvania)
• Silurian of Australia (5), Canada (2: Nova Scotia), Paraguay (1), Poland (1), the United Kingdom (19), United States (2: Ohio, Tennessee)
• Dobrotivian of France (1), Morocco (1), Portugal (2), Spain (2)
• Whiterockian of United States (1: Nevada)
• Arenig of Canada (1: Yukon)
• Ordovician of Argentina (2), Canada (2: Nunavut, Ontario), China (1), Czechia (6), Morocco (7), Spain (1), Sweden (14), the United Kingdom (15), United States (8: Iowa, Kentucky, Missouri, New York, Ohio, Pennsylvania)
• Cambrian of Antarctica (1), Argentina (2), Australia (29), Canada (58: British Columbia, Labrador, New Brunswick, Newfoundland, Newfoundland and Labrador, Northwest Territories, Nova Scotia, Nunavut, Quebec), China (6), Czechia (1), Denmark (1), Germany (1), Greenland (1), India (1), Mexico (8), Norway (3), the Russian Federation (4), Svalbard and Jan Mayen (1), Sweden (5), the United Kingdom (6), United States (71: Arizona, California, Idaho, Idaho/ Utah, Indiana, Maryland, Massachusetts, Montana, Nevada, New York, Pennsylvania, South Dakota, Utah, Vermont, Wisconsin, Wyoming, Wyoming-Montana)
• Templetonian of Australia (24)
• Amgan of Czechia (2), Norway (1)
• Solvan of Argentina (1), Canada (2: British Columbia), Norway (1), Sweden (3)
• Caerfai of Canada (2: Northwest Territories, Nunavut), United States (1: New York)
• Placentian of Canada (1: Newfoundland and Labrador)
Total: 386 collections including 453 occurrences