Zacanthusa, Genus – synonym of Alvania, Genus
Zastoma, Genus – synonym of Odostomia, Genus
Zeacrypta, Genus – synonym of Crepidula, Genus
Zebittium, Genus – synonym of Bittium, Genus
Zippora, Genus – synonym of Rissoa, Genus
Ziziphinus, Genus – synonym of Calliostoma, Genus
Zooteredo, Genus – synonym of Teredo, Genus
Zucleica, Genus – synonym of Clausinella, Genus
Zygaenopsis, Genus – synonym of Galiteuthis, Genus
Zygocranchia, Genus – synonym of Galiteuthis, Genus
Zygonoleda, Genus – synonym of Nuculana, Genus