†Sostronocrinus Strimple and McGinnis 1969
Parent taxon: Sostronocrinidae according to N. G. Lane et al. 2001
Sister taxa: Haertocrinus, Tundracrinus
Subtaxa: Sostronocrinus minutus, Sostronocrinus mundus, Sostronocrinus quadribrachiatus, Sostronocrinus superbus
Type: Sostronocrinus superbus