Lingulata - Acrotretida - Acrotretidae
Parent taxon: Acrotretoidea according to C. B. Skovsted et al. 2017
See also Brock and Cooper 1993, Bruton and Harper 2000, Hansen and Holmer 2011, Henningsmoen 1952, Holmer 1986, Holmer 1989, Landing et al. 2002, Li and Holmer 2004, Mitchell 1977, Popov 2000, Popov et al. 1996, Puura and Holmer 1993, Williams et al. 2000, Wright 1963 and Zhan et al. 2010
Sister taxa: Acrothyra, Ceratretidae, Craniotreta, Curticiidae, Eoconulidae, Ephippelasmatidae, Hadrotreta, Scaphelasmatidae, Schizotretoides, Torynelasmatidae, Acrotetidae
Subtaxa: Acrotreta Acrotretinae Amictocracens Anabolotreta Anelotreta Angulotreta Aphelotreta Apsotreta Araktina Biernatinae Brachaktassia Canthylotreta Conotreta Cyrtonotreta Dactylotreta Dicondylotreta Ditreta Eohadrotreta Eurytreta Fascicoma Galinella Genetreta Hisingerella Homotreta Iberotreta Kostjubella Kotylotreta Kuangshanotreta Lensotreta Linnarssonella Linnarssonia Linnarssoniinae Longipegma Mixotreta Neotreta Odontotreta Olentotreta Ombergia Opisthotreta Ottenbyella Physotreta Picnotreta Prototreta Quadrisonia Rhondellina Satpakella Scaphelasmatinae Semitreta Spondylotreta Stilpnotreta Tapuritreta Tasbulakia Tingitanella Torynelasmatinae Treptotreta Vandalotreta
Ecology: stationary epifaunal suspension feeder
Distribution:
• Silurian of United States (1: Tennessee collection)
• Uhaku of Sweden (6)
• Chazyan of United States (2: Alabama, Tennessee)
• Billingen of the Russian Federation (4)
• Arenig of China (1), France (1), Norway (1), Sweden (1), the United Kingdom (2), United States (1: Montana)
• Klabava of Czechia (1)
• Arenigian of Czechia (1)
• Ordovician of Argentina (7), Australia (40), Canada (2: Newfoundland and Labrador, Quebec), China (16), Colombia (1), Czechia (11), Estonia (16), France (3), Iran (10), Ireland (2), Kazakhstan (8), Lithuania (1), Mexico (3), Norway (38), Poland (1), the Russian Federation (1), Sweden (48), the United Kingdom (24), United States (42: Iowa, Montana, Nevada, New York, North Dakota, Tennessee, Utah, Virginia)
• Cambrian to Ordovician of Poland (1)
• Cambrian of Antarctica (3), Argentina (2), Australia (19), Canada (22: Alberta, British Columbia, Newfoundland, Newfoundland and Labrador, Quebec, Saskatchewan), China (22), Czechia (5), Denmark (3), Estonia (11), France (1), Greenland (8), Kazakhstan (134), Kyrgyzstan (3), Mexico (17), Morocco (2), New Zealand (3), Norway (1), Poland (1), the Russian Federation (5), South Korea (1), Spain (5), Sweden (1), the United Kingdom (7), United States (157: Alabama, California, Georgia, Idaho, Montana, Nevada, New York, Pennsylvania, South Dakota, Texas, Utah, Vermont, Wisconsin, Wyoming)
• Templetonian of Australia (4)
• Amgan of Germany (2), Kazakhstan (8), Norway (1), the Russian Federation (1)
• Solvan of Czechia (1), Kazakhstan (1)
• Caerfai of Italy (9)
Total: 757 collections including 1105 occurrences