Australian Exclusive Economic Zone for
Monoplex exaratus (Reeve, 1844)
Baja California Sur for
Monoplex keenae (Beu, 1970)
Baja California Sur for
Monoplex lignarius (Broderip, 1833)
Brazil for
Monoplex krebsii (Mörch, 1877)
Brazil for
Reticutriton pfeifferianus (Reeve, 1844)
Brazil for
Simpulum carlottae C. S. Ferreira & da Cunha, 1957 †
Brazil for
Simpulum chlorostomoides Maury, 1924 †
Brazil for
Simpulum infelix Maury, 1924 †
California for
Gyrineum elsmerense English, 1914 †
California for
Monoplex amictus (Reeve, 1844)
Canaries for
Monoplex krebsii (Mörch, 1877)
Chile for
Monoplex keenae (Beu, 1970)
Chile for
Tritonium exiguum R. A. Philippi, 1887 †
Clipperton Exclusive Economic Zone for
Monoplex macrodon (Valenciennes, 1832)
Cocos Islands Exclusive Economic Zone for
Monoplex macrodon (Valenciennes, 1832)
Colombian part of the North Pacific Ocean for
Monoplex amictus (Reeve, 1844)
Colombian part of the North Pacific Ocean for
Monoplex macrodon (Valenciennes, 1832)
Colombian part of the North Pacific Ocean for
Monoplex vestitus (Hinds, 1844)
Costa Rican part of the North Pacific Ocean for
Monoplex lignarius (Broderip, 1833)
Costa Rican part of the North Pacific Ocean for
Monoplex macrodon (Valenciennes, 1832)
Dominican Republic for
Monoplex gurabonicus (Maury, 1917) †
Dominican Republic for
Monoplex longispira Beu, 2010 †
Dominican Republic for
Simpulum antillarum var. cercadicum Maury, 1917 †
Ecuadorean Exclusive Economic Zone for
Monoplex lignarius (Broderip, 1833)
Florida for
Monoplex krebsii (Mörch, 1877)
Florida for
Monoplex mundus (A. Gould, 1849)
Florida for
Monoplex ritteri Schmelz, 1989 †
Galapagos for
Monoplex amictus (Reeve, 1844)
Galapagos for
Monoplex keenae (Beu, 1970)
Galapagos Exclusive Economic Zone for
Monoplex macrodon (Valenciennes, 1832)
Galapagos Exclusive Economic Zone for
Monoplex mundus (A. Gould, 1849)
Galapagos Exclusive Economic Zone for
Monoplex vestitus (Hinds, 1844)
Georgia (US State) for
Cymatium cecilianum Dall, 1916 †
Guyanas for
Monoplex krebsii (Mörch, 1877)
Honduras for
Monoplex krebsii (Mörch, 1877)
Java for
Cymatium (Gutturnium) bayeri van Regteren Altena, 1942 †
Mexican part of the North Pacific Ocean for
Monoplex amictus (Reeve, 1844)
Mexican part of the North Pacific Ocean for
Monoplex macrodon (Valenciennes, 1832)
Mexican part of the North Pacific Ocean for
Monoplex vestitus (Hinds, 1844)
North Carolina for
Monoplex krebsii (Mörch, 1877)
Panama for
Cymatium (Septa) pileare henicum Woodring, 1959 †
Panama for
Monoplex cercadicus (Maury, 1917) †
Panama for
Monoplex gatunicus Beu, 2010 †
Panama for
Monoplex panamensis Beu, 2010 †
Panama Bay for
Cymatium (Gutturnium) amictoideum Keen, 1971
Panamanian part of the North Pacific Ocean for
Monoplex lignarius (Broderip, 1833)
Panamanian part of the North Pacific Ocean for
Monoplex macrodon (Valenciennes, 1832)
Panamanian part of the North Pacific Ocean for
Monoplex mundus (A. Gould, 1849)
Peru for
Monoplex amictus (Reeve, 1844)
Peru for
Monoplex keenae (Beu, 1970)
Peruvian Exclusive Economic Zone for
Monoplex mundus (A. Gould, 1849)
Peruvian Exclusive Economic Zone for
Monoplex vestitus (Hinds, 1844)
Sahara Coast for
Monoplex krebsii (Mörch, 1877)
Senegal for
Murex trigonus Gmelin, 1791
St. Helena Exclusive Economic Zone for
Monoplex turtoni (E. A. Smith, 1890)
Texas for
Monoplex krebsii (Mörch, 1877)
Trinidad and Tobago for
Cymatium (Ranularia) kugleri Rutsch, 1942 †
Trinidad and Tobago for
Monoplex krebsii (Mörch, 1877)
Venezuela for
Monoplex cercadicus (Maury, 1917) †
Venezuela for
Monoplex jackwinorum Beu, 2010 †
Venezuela for
Monoplex ritteri Schmelz, 1989 †