†suborder Orthidina Schuchert and Cooper 1932 (lamp shell)
Parent taxon: Orthida according to M. Liljeroth et al. 2017
See also Benedetto 2003, Bruton et al. 1984, Cooper 1976, Geyer and Mergl 1997, Hansen and Holmer 2011, Hints 2010, Jakobsen et al. 2014, Neuman and Bruton 1974, Owen and Harper 1982, Popov et al. 2009, Potter 1990, Rubel 2011, Williams et al. 2000, Zhan et al. 2010, Zuykov and Butts 2008, Zuykov and Egerquist 2005, Zuykov and Harper 2007 and Zuykov et al. 2008
Sister taxa: Bethia, Dalmanellidina, Fehamya, Glypterina, Kundatella, Orthina, Sphenorthis
Subtaxa: Enteletacea Orthoidea Plectorthoidea Protorthacea Triplesiacea Yeosinella
Ecology: stationary epifaunal suspension feeder