†family Heterorthidae Schuchert and Cooper 1931 (lamp shell)

Rhynchonellata - Orthida - Heterorthidae

Parent taxon: Dalmanelloidea according to L. Hints and D. A. T. Harper 2015

See also Williams et al. 2000

Sister taxa: Angusticardiniidae, Dalmanellidae, Dicoelosiidae, Harknessellidae, Hypsomoniidae, Kayserellidae, Mystrophoridae, Paurorthidae, Platyorthidae, Portranellidae, Proschizophoriidae, Rhipidomellidae, Tyronellidae

Subtaxa: Arenorthis Cacemia Cilinella Heterorthella Heterorthina Heterorthis Incorthis Marionites Svobodaina Tafilaltia Tarfaya Tissintia

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Type: Heterorthis

Ecology: stationary epifaunal suspension feeder

Distribution:

• Silurian of Argentina (7 collections), Brazil (1), Canada (2: Quebec), Guinea (1), Peru (3)

• Ordovician to Silurian of South Africa (1)

• Ordovician of Argentina (3), Australia (1), Bolivia (5), Canada (1: Quebec), China (1), the Czech Republic (6), France (10), Iran (7), Latvia (1), Morocco (10), Paraguay (4), Peru (2), Portugal (14), Spain (39), Sweden (2), Turkey (1), the United Kingdom (58), United States (31: Kentucky, Ohio, Tennessee), Venezuela (1)

• Llandeilo of Bolivia (1), the United Kingdom (2)

• Arenig of Argentina (3), Bolivia (1), Morocco (1)

Total: 220 collections including 246 occurrences

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