†family Diplagnostidae Whitehouse 1936 (trilobite)

Trilobita - Agnostida - Diplagnostidae

Parent taxon: Agnostoidea according to D. L. Bruton and D. A. T. Harper 2000

See also Bao and Jago 2000 and Whittington et al. 1997

Sister taxa: Anomocaridae, Hypagnostoidae, Marjumiidae, Pseudagnostidae, Solenopleuridae

Subtaxa: Acadagnostus Agnostotes Baltagnostus Denagnostus Diplagnostinae Diplagnostus Iniospheniscus Linguagnostus Litagnostus Machairagnostus Nahannagnostus Oedorhachis Oidalagnostus Pseudagnostus Xestagnostus

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Ecology: slow-moving epifaunal detritivore

Distribution:

• Ordovician of Argentina (10 collections), Bolivia (1), Canada (2: Newfoundland and Labrador), Mexico (2), the United Kingdom (1), United States (2: Texas, Vermont)

• Arenigian of China (1)

• Ayusokkanian of Kazakhstan (16)

• Marjumian of Canada (2: Newfoundland and Labrador), United States (10: Georgia, New York, Utah)

• Cambrian of Argentina (5), Australia (8), Canada (64: Alberta, British Columbia, Newfoundland and Labrador, Quebec, Yukon), China (193), the Czech Republic (2), Denmark (2), Greenland (8), India (4), Italy (1), Kazakhstan (77), the Russian Federation (29), South Korea (55), Spain (2), United States (97: Alabama, Alaska, Arkansas, California, Idaho, Indiana, Minnesota, Missouri, Montana, Nevada, Nevada and Utah, South Dakota, Texas, Utah, Virginia, Wisconsin, Wyoming)

Total: 594 collections including 826 occurrences

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