†family Plectorthidae Schuchert and Le Vene 1929 (lamp shell)

Rhynchonellata - Orthida - Plectorthidae

Parent taxon: Plectorthoidea according to A. Williams et al. 2000

See also Alikhova 1953, Bassett and Cocks 1974, Benedetto 2003, Howe 1988, Jin and Chatterton 1997, Macomber 1970, Mitchell 1977, Neuman 1964, Oraspold 1956, Oraspold 1959, Owen and Harper 1982, Phleger 1933, Popov et al. 2000, Potter 1990, Rõõmusoks 1964, Rubel 1961 and Wright 1964

Sister taxa: Apatoskenidioides, Chilcorthidae, Cremnorthidae, Cyclocoeliidae, Eoorthidae, Euorthisinidae, Finkelnburgiidae, Giraldiellidae, Lebediorthis, Nanorthidae, Phragmorthidae, Platystrophiidae, Ranorthidae, Rhactorthidae, Tasmanorthidae, Wangyuiidae

Subtaxa: Apollonorthis Ashinaorthis Atlantida Corineorthis Desmorthis Doleroides Hebertella Irhirea Lipanorthis Mimella Nanorthis Oligorthis Orthostrophiinae Paterorthis Platystrophiinae Platystrophinae Plectorthinae Plectorthis Pseudomimella Schizophorella Severginella

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Ecology: stationary epifaunal suspension feeder

Distribution:

• Silurian of China (1 collection), the Czech Republic (6), United States (1: Illinois)

• Ordovician to Silurian of Canada (4: Québec)

• Ordovician of Argentina (15), Australia (23), Bolivia (1), Canada (105: Newfoundland, Northwest Territories, Nunavut, Nunvait, Ontario, Quebec, Québec), China (37), Colombia (1), the Czech Republic (1), Estonia (3), France (3), Ireland (1), Kazakhstan (36), Morocco (3), Myanmar (1), Norway (6), Portugal (4), the Russian Federation (44), Spain (7), Sweden (10), the United Kingdom (20), United States (901: Alaska, California, Colorado, Georgia, Idaho, Illinois, Iowa, Indiana, Kentucky, Maryland, Michigan, Minnesota, Montana, Nevada, New Mexico, New York, North Dakota, Ohio, Oklahoma, Pennsylvania, Tennessee, Texas, Utah, Virginia), Venezuela (1)

• Llandeilo of the United Kingdom (2)

• Chazy of Canada (14: Ontario, Quebec), United States (43: New York)

• Whiterockian of United States (28: California, Nevada, Oklahoma, Virginia)

• Dawan of China (6)

• Arenig of Argentina (8), Bolivia (3), China (34), the Russian Federation (2), Sweden (5), the United Kingdom (2), United States (5: Montana, Nevada, North Dakota, Texas)

• Arenigian of Argentina (2)

• Cambrian to Ordovician of the Russian Federation (1)

• Cambrian of Canada (1: Newfoundland and Labrador)

Total: 1391 collections including 1579 occurrences

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