Gastropoda - Opisthobranchiata - Cylichnidae
Parent taxon: Cylichna according to O. Mandic and F. F. Steininger 2003
Sister taxa: Cylichna (Acrostemma), Cylichna (Cylichnopsis), Cylichna alba, Cylichna andersoni, Cylichna angustata, Cylichna angystoma, Cylichna attonsa, Cylichna aula, Cylichna calvertensis, Cylichna diegensis, 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 (Cylichna) cylindracea Cylichna (Cylichna) ypresiana
Ecology: epifaunal carnivore
Distribution:
• Quaternary of France (1 collection), Morocco (1)
• Pliocene of Belgium (2), Italy (2), the Netherlands (1), the United Kingdom (1)
• Miocene of Austria (1), Belgium (9), Denmark (1), Germany (30), Italy (2), the Netherlands (2), Sao Tome and Principe (1)
• Eocene of India (7)
Total: 61 collections including 65 occurrences