Rhynchonellata - Terebratulida

Parent taxon: Terebratulida according to J. Jin and B. D. E. Chatterton 1997

Sister taxa: Aerithyris, Asiacranaena, Bullothyris, Clathrithyridoidea, Ense, Eudesites, Gwyniidina, Loenthyris, Minithyris, Obolorugidae, Parasulcatinella, Rugosothyris, Selenella, Struvethyris, Subsinucephalus, Terebratellidina, Terebratulidina, Triseptothyris, Yekerpene

Subtaxa: Microbilobata

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Ecology: stationary low-level epifaunal suspension feeder

Distribution: found only at Fauna x, Section AV5, Delorme Fm., Mackenzie Mts. (Silurian of Northwest Territories)

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