†subfamily Productorthinae Schuchert and Cooper 1931 (lamp shell)
Rhynchonellata - Orthida - Productorthidae
Parent taxon: Productorthidae according to A. Williams et al. 2000
Sister taxon: Glossorthinae
Subtaxa: Ferrax, Nicolella, Panderina, Productorthis, Saucrorthis
Ecology: stationary epifaunal suspension feeder