†subfamily Plaesiomyinae Schuchert 1913 (lamp shell)

Rhynchonellata - Orthida - Plaesiomyidae

Parent taxon: Plaesiomyidae according to M. Liljeroth et al. 2017

See also Mitchell 1977, Williams et al. 2000 and Zuykov et al. 2008

Sister taxa: Bokotorthis, Evenkininae, Metorthinae

Subtaxa: Austinella Campylorthis Chaulistomella Dinorthis Madiorthis Multicostella Plaesiomys Retrorsirostra Valcourea

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Ecology: stationary epifaunal suspension feeder

Distribution:

• Silurian of Sweden (6 collections)

• Ordovician to Silurian of United States (1: California)

• Ordovician of Argentina (5), Australia (19), Belarus (2), Bolivia (5), Canada (139: British Columbia, Manitoba, Northwest Territories, Nunavut, Nunvait, Ontario, Quebec), China (12), Estonia (20), France (1), Ireland (5), Kazakhstan (23), Myanmar (1), Norway (4), Peru (1), Poland (1), the Russian Federation (22), the United Kingdom (51), United States (357: Alaska, California, Colorado, Georgia, Idaho, Illinois, Illinois, Iowa, Indiana, Iowa, Kentucky, Michigan, Minnesota, Missouri, Nevada, New Mexico, New York, Ohio, Oklahoma, Pennsylvania, Tennessee, Texas, Virginia, Wisconsin, Wyoming)

• Chazy of Canada (7: Ontario, Quebec), United States (51: New York, Tennessee, Virginia)

• Llandeilo of China (1), the United Kingdom (2), United States (1: Tennessee)

• Whiterockian of United States (12: Nevada)

• Arenig of Bolivia (3), Canada (1: New Brunswick), China (2)

Total: 755 collections including 957 occurrences

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