†family Pliomeridae Raymond 1913 (trilobite)

Trilobita - Phacopida - Pliomeridae

Parent taxon: Cheirurina according to J. M. Adrain 2011

See also Fortey and Droser 1999, Harrington and Leanza 1957, Nikolaisen 1961 and Whittington et al. 1997

Sister taxa: Cheiruridae, Encrinuridae

Subtaxa: Anapliomera Benedettia Colobinion Cybelopsinae Encrinurella Evropeites Gogoella Guizhoupliomerops Hammatocneminae Hintzeia Ibexaspis Josephulus Leiostrototropis Lemureops Liexiaspis Obliteraspis Parapliomera Perissopliomera Placoparia Pliomera Pliomerella Pliomeridius Pliomerina Pliomerinae Protoencrinurella Protopliomerella Protopliomerops Pseudomera Rossaspis

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Ecology: fast-moving low-level epifaunal carnivore

Distribution:

• Dobrotivian of the Czech Republic (2 collections), France (4), Morocco (1), Portugal (4), Spain (14)

• Letna of the Czech Republic (1)

• Chazyan of Canada (8: Newfoundland and Labrador, Quebec), United States (27: New York, Oklahoma, Tennessee)

• Whiterockian of Canada (35: Newfoundland, Newfoundland and Labrador, Northwest Territories, Quebec), Norway (2), United States (66: California, Nevada, New York, Oklahoma, Utah, Vermont)

• Fennian of France (1), United States (1: Nevada)

• Volkhov of the Russian Federation (2)

• Valaste of Sweden (1)

• Dawan of China (2)

• Arenigian of Canada (1: Northwest Territories), China (10), United States (5: Nevada, Utah)

• Arenig of Argentina (6), Australia (1), Bolivia (1), Canada (1: Newfoundland and Labrador), China (12), France (1), Greenland (1), the Russian Federation (2), Sweden (3), the United Kingdom (4)

• Ordovician of Argentina (18), Australia (47), Canada (16: Alberta, British Columbia, Newfoundland, Newfoundland and Labrador, Ontario), China (82), the Czech Republic (3), Estonia (2), France (1), Iran (2), Italy (2), Kazakhstan (4), Morocco (4), Norway (4), the Russian Federation (12), Spain (25), Sweden (21), the United Kingdom (14), United States (201: California, Idaho, Iowa/Wisconsin, Montana, Nevada, Utah, Virginia)

• Canadian of Canada (2: Northwest Territories, Québec)

• Tremadoc of Argentina (21), Bolivia (1), Canada (14: Alberta), China (1), the Russian Federation (6), Sweden (2)

• Ibexian of Canada (2: Quebec), Norway (1), United States (1: Nevada)

Total: 728 collections including 835 occurrences

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