†family Marjumiidae Kobayashi 1935 (trilobite)

Trilobita - Agnostida - Marjumiidae

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

See also Jell and Adrain 2003 and Whittington et al. 1997

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

Subtaxa: Armonia Holmdalia Ithyektyphus Marjumia Modocia Nasocephalus Nericella Nericia Pearylandia Shickshockia Syspacheilus

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Ecology: slow-moving epifaunal detritivore

Distribution:

• Marjumian of Greenland (9 collections), United States (9: Texas, Utah, Vermont)

• Cambrian of Canada (10: British Columbia, Newfoundland, Northwest Territories, Yukon), China (1), Greenland (4), the Russian Federation (4), United States (46: Alaska, Georgia, Pennsylvania, South Dakota, Texas, Utah, Vermont, Wisconsin, Wyoming)

Total: 83 collections including 127 occurrences

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