†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 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