Gastropoda - Opisthobranchia - Cylichnidae
Alternative spelling: Acrostemma
Parent taxon: Cylichna according to F. E. Eames 1952
See also Sepkoski 2002
Sister taxa: Cylichna (Cylichna), Cylichna (Cylichnopsis), Cylichna alba, Cylichna andersoni, Cylichna angustata, Cylichna angystoma, Cylichna attonsa, Cylichna aula, Cylichna calvertensis, Cylichna discus, Cylichna diversilirata, Cylichna elliptica, Cylichna faba, Cylichna fantasma, Cylichna greensboroensis, Cylichna incisa, Cylichna intermissia, Cylichna jacksonensis, Cylichna loismartinae, Cylichna makanjuolai, Cylichna occulta, Cylichna paupercula, Cylichna pessumata, Cylichna ramonensis, Cylichna salbriacensis, Cylichna secalina, Cylichna solivaga, Cylichna subalpina, Cylichna takashimaensis, Cylichna temblorensis, Cylichna tenuis, Cylichna venusta
Subtaxa: Cylichna (Acrostemma) punjabensis
Ecology: epifaunal carnivore
Distribution: