†tribe Trigonotretini Schuchert 1893 (lamp shell)

Rhynchonellata - Spiriferida - Trigonotretidae

Parent taxon: Trigonotretinae according to G. A. Cisterna and N. W. Archbold 2007

See also Waterhouse 2004

Sister taxa: Aperispirifer, Brachythyrinella, Frechella, Grantonini, Neilotreta, Sulciplica, Tasmanospirifer, Trigonotreta

Subtaxa: Pericospira

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Ecology: stationary epifaunal suspension feeder

Distribution:

• Permian of Chile (2 collections)

• Carboniferous of Argentina (5), Chile (1)

Total: 8 collections each including a single occurrence

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