†family Triadocidaridae Smith 1994 (sea urchin)

Echinoidea - Euechinoidea - Triadocidaridae

Full reference: A. B. Smith. 1994. Triassic echinoids from Peru. Palaeontographica Abteilung A 233:177-202

Parent taxon: Euechinoidea according to A. B. Smith 1994

Sister taxa: Acroechinoidea, Diadematacea, Echinacea, Echinothurioida, Galeroclypeus, Loriolella, Serpianotiaroida, Triadotiaroida

Subtaxa: Levicidaris Megaporocidaris Mikrocidaris Parvicidaris Triadocidaris Vinchuscanchaia Zardinechinus

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Type: Triadocidaris

Ecology: epifaunal grazer-deposit feeder

Distribution:

• Triassic of Canada (1: British Columbia collection), China (4), East Timor (1), Hungary (3), Italy (6), Peru (6), Poland (1), Slovenia (1), United States (1: Idaho)

Total: 24 collections including 57 occurrences

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