Rhynchonellata - Spiriferida

Alternative spelling: Spiriferacea

Full reference: W. King. 1846. Remarks on certain genera belonging to the class Palliobranchiata. Annals and Magazine of Natural History, series 1 183:26-42

Parent taxon: Spiriferidina according to A. Williams et al. 2006

Sister taxa: Adolfioidea, Ambocoelioidea, Brachythyridoidea, Cyrtioidea, Cyrtospiriferoidea, Delthyridacea, Martinioidea, Paeckelmanelloidea, Theodossioidea

Subtaxa: Choristitidae, Imbrexiidae, Reticulariacea, Spiriferellidae, Spiriferidae, Trigonotretidae

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Ecology: stationary epifaunal suspension feeder