†Bostryclavus
Parent taxon: Isorophida according to J. J. Sepkoski 2002
Sister taxa: Agelacrinitidae, Archaepyrgus, Argodiscus, Belochthus, Chatsworthia, Clavidiscus, Cryptogoleus, Curvitriordo, Deltadiscus, Edriodiscus, Epipaston, Euhydrodiskos, Fanulodiscus, Floridiscus, Giganticlavus, Hadrochthus, Hadrodiscus, Hypsiclavus, Hystrichopsydrax, Krama, Rectitriordo, Savagella, Spiraclavus, Stalticodiscus
Subtaxa: none
Ecology: stationary intermediate-level epifaunal suspension feeder