†order Pentamerida Schuchert and Cooper 1931 (lamp shell)
Parent taxon: Rhynchonellata according to M. Liljeroth et al. 2017
See also Benedetto 2003, Hansen and Holmer 2011, Jin and Chatterton 1997, Sepkoski 2002, Temple 1987 and Williams et al. 2002
Sister taxa: Athyridida, Atrypida, Cadomelloidea, Cardiarinidae, Dentatrypa, Mongolellidae, Orthida, Protorthida, Rhynchonellida, Spiriferida, Spiriferinida, Terebratulida, Thecideida, Tropidoleptidae
Subtaxa: Pentameridina Shordolella Syntrophiidina
Ecology: stationary epifaunal suspension feeder