†family Dikelocephalidae Miller 1889 (trilobite)

Trilobita - Asaphida - Dikelocephalidae

Synonym: Saukiidae Ulrich and Resser 1930

Parent taxon: Dikelocephaloidea according to S. J. Wernette et al. 2020

See also Adrain 2011, Robison and Pantoja-Alor 1968 and Whittington et al. 1997

Sister taxa: Dikelocephaliidae, Ptychaspididae

Subtaxa: Anderssonella Calvinella Caznaia Diemanosaukia Eosaukia Galerosaukia Hamashania Lichengia Linguisaukia Lophoholcus Lophosaukia Mictosaukia Prosaukia Pseudocalvinella Saukia Saukiella Sinosaukia Stigmaspis Suluderella Tellerina

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Ecology: fast-moving low-level epifaunal carnivore

Distribution:

• Ordovician of Antarctica (1 collection), Canada (4: Alberta, British Columbia, Yukon), Mexico (3), the Russian Federation (3), United States (2: Texas)

• Cambrian of Australia (26), Canada (24: Alberta, Newfoundland, Newfoundland and Labrador, Quebec, Yukon), China (35), Iran (2), Kazakhstan (15), South Korea (4), Turkey (1), United States (98: Alaska, Colorado, Minnesota, Missouri, Montana, Nevada, New York, South Dakota, Texas, Utah, Vermont, Virginia, Wisconsin, Wyoming)

Total: 218 collections including 343 occurrences

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