261 Mariana Islands species
buccinids
cassids
cerithiids
clathurellids
colubrariids
columbellids
conids
costellariids
cypraeids
cystiscids
epitoniids
eulimids
fasciolariids
fissurellids
haliotids
harpids
horaiclavids
littorinids
marginellids
mitrids
mitromorphids
muricids
nassariids
naticids
neritids
olivids
ovulids
patellids
personids
phenacolepadids
pisaniids
ranellids
raphitomids
rissoellids
strombids
tegulids
terebrids
titiscaniids
tonnids
triphorids
triviids
trochids
turbinids
vasids
velutinids
vermetids
unsorted prosobranchs
