†order Siphonotretida Gorjansky 1960 (lamp shell)
Parent taxon: Lingulata according to J. Hansen and L. E. Holmer 2011
See also Cocks 2019, Holmer 1989, Popov et al. 2002, Puura and Holmer 1993 and Williams et al. 2000
Sister taxa: Acrotretida, Discinida, Lingulida, Trimerellida
Subtaxa: Siphonotretacea Siphonotretoidea
Ecology: stationary low-level epifaunal suspension feeder