†family Euorthisinidae Havlicek 1977 (lamp shell)

Rhynchonellata - Orthida - Euorthisinidae

Parent taxon: Plectorthoidea according to A. Williams et al. 2000

See also Benedetto 2007

Sister taxa: Apatoskenidioides, Chilcorthidae, Cremnorthidae, Cyclocoeliidae, Eoorthidae, Finkelnburgiidae, Giraldiellidae, Lebediorthis, Nanorthidae, Phragmorthidae, Platystrophiidae, Plectorthidae, Ranorthidae, Rhactorthidae, Tasmanorthidae, Wangyuiidae

Subtaxa: Euorthisina Lesserorthis Protorthisina

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Type: Euorthisina

Ecology: stationary epifaunal suspension feeder

Distribution:

• Arenig of Bolivia (1 collection), China (7), the United Kingdom (6)

• Ordovician of Argentina (2), China (13), Czechia (1), Morocco (5), Peru (3), Spain (1)

• Cambrian of Argentina (1)

Total: 40 collections including 43 occurrences

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