†family Dionididae G├╝rich 1907 (trilobite)

Trilobita - Trinucleida - Dionididae

Parent taxon: Trinucleida according to A. Bignon et al. 2020

See also Adrain 2011, Jell and Adrain 2002 and Whittington et al. 1997

Sister taxa: Alsataspididae, Liostracinidae, Raphiophoridae, Trinucleidae

Subtaxa: Aethedionide Digrypos Dionide Dionidella Tongxinaspis Trinucleoides

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Ecology: fast-moving low-level epifaunal carnivore

Distribution:

• Dobrotivian of the Czech Republic (2 collections), France (3), Portugal (1)

• Arenig of the United Kingdom (3)

• Ordovician of Canada (1: Quebec), China (27), the Czech Republic (7), France (4), Ireland (1), Kazakhstan (3), Morocco (3), Norway (11), the Russian Federation (1), Sweden (4), Turkey (1), the United Kingdom (10), United States (7: Maine, Virginia)

Total: 89 collections including 96 occurrences

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