†subfamily Tritoechiinae Ulrich and Cooper (lamp shell)

Strophomenata - Billingsellida - Tritoechiidae

Parent taxon: Tritoechiidae according to R. B. Neuman 1964

Sister taxa: Korinevskia, Pinatotoechia

Subtaxa: Pomatotrema

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Ecology: stationary epifaunal suspension feeder

Distribution:

• Arenig of China (2 collections)

• Ordovician of Argentina (2), China (2), Ireland (1), Kazakhstan (10), United States (2: Oklahoma, Tennessee)

Total: 19 collections including 20 occurrences

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