Articulata
                  Rhynchonellida
Bivalvia
      Anomalodesmata
                  Pholadomyoida
      Cryptodonta
                  Solemyoida
      Heterodonta
                  Myoida
                  Veneroida
      Paleoheterodonta
                  Trigonioida
                  Unionoida
      Paleotaxodonta
                  Nuculoida
      Pteriomorphia
                  Arcoida
                  Limoida
                  Mytiloida
                  Ostreoida
                  Pterioida
Caudofoveata
                  Chaetodermatida
Cephalopoda
                  Nautilida
                  Octopoda
                  Sepiida
                  Teuthida
                  Vampyromorpha
Gastropoda
      Caenogastropoda
                  Architaenioglossa
                  Neogastropoda
                  Neotaenioglossa
                  Ptenoglossa
      Cocculiniformia
      Heterobranchia
                  Umbraculida
            Opisthobranchia
                  Anaspidea
                  Cephalaspidea
                  Gymnosomata
                  Nudibranchia
                  Nudipleura
                  Sacoglossa
                  Thecosomata
            Pulmonata
                  Basommatophora
                  Stylommatophora
                  Systellommatophora
      Neritomorpha
      Patellogastropoda
      Vetigastropoda
Polychaeta
                  Sedentarida
Polyplacophora
                  Chitonida
Scaphopoda
                  Dentaliida
                  Gadilida

Afghanistan
Albania
Algeria
American Samoa
Andaman and Nicobar Islands
Andorra
Angola
Anguilla
Antarctica
Antigua and Barbuda
Argentina
Argentina/Brazil
Argentina/Chile
Argentina/Uruguay
Armenia
Aruba
Ascension Island
Austral Islands
Australia
Australia/Indonesia
Australia/New Guinea
Australia/Papua New Guinea
Austria
Austria/Italy
Azerbaijan
Bahamas
Bahamas/USA
Bahrain
Baker Island
Bangladesh
Bangladesh/India
Barbados
Belarus
Belgium
Belize
Benin
Bermuda
Bhutan
Bolivia
Bolivia/Peru
Bonaire
Bosnia and Herzegovina
Botswana
Brazil
Brazil/Peru
British Virgin Islands
British/U.S. Virgin Islands
Brunei
Brunei/Malaysia
Bulgaria
Burkina Faso
Burundi
Cambodia
Cambodia/Thailand
Cameroon
Cameroon/Nigeria
Canada
Canada/Greenland
Canada/USA
Cape Verde Islands
Cayman Islands
Central African Republic
Chagos Archipelago
Chile
China
China/Russia
China/Taiwan
Clipperton Island
Cocos Keeling Islands
Colombia
Colombia/Panama
Colombia/Venezuela
Comoro Islands
Congo
Congo, Democratic
Congo, Democratic/Uganda
Congo, Democratic/Zambia
Congo, Democratic?
Congo/Democratic Congo
Congo/Rwanda
Cook Islands
Costa Rica
Country not determined
Country not feasible
Country unknown
Croatia
Croatia/Bosnia & Herzogovina
Croatia/Slovenia
Cuba
Cuba/Jamaica
Cuba/Mexico
Curacao
Cyprus
Czech Republic
Czech Republic/Poland
Denmark
Denmark/Germany
Djibouti
Dominica
Dominican Republic
Dominican Republic/Haiti
East Timor
Ecuador
Ecuador/Peru
Egypt
El Salvador
Equatorial Guinea
Eritrea
Ethiopia
Ethiopia/Eritrea
Ethiopia/Kenya
Ethiopia/Somalia
Ethiopia/Sudan
Falkland Islands
Faroe Islands
Fiji
Fiji Islands
Finland
France
France/Italy
France/Spain
France/Switzerland
French Guiana
French Guiana/Suriname
French Polynesia
Gabon
Gambia
Gambia/Senegal
Gambier Islands
Georgia
Georgia/Russia
Germany
Germany/Netherlands
Ghana
Gibraltar
Greece
Greece/Turkey
Greenland
Grenada
Guadeloupe
Guam
Guatemala
Guatemala/Mexico
Guiana
Guinea
Guinea-Bissau
Guyana
Haiti
Honduras
Honduras/Nicaragua
Howland Island
Hungary
Hungary/Slovakia
Iceland
India
India/Ceylon
India/Myanmar
India/Pakistan
India/Sri Lanka
India?
Indonesia
Indonesia/East Timor
Indonesia/Malaysia
Indonesia/Papua New Guinea
Iran
Iran/Pakistan
Iraq
Iraq/Turkey
Ireland
Israel
Israel/Jordan
Italy
Italy/Slovenia
Italy/Switzerland
Ivory Coast
Jamaica
Japan
Japan/Korea
Japan/Russia
Johnston Atoll
Jordan
Kampuchea
Kazakhstan
Kenya
Kenya/Tanzania
Kenya/Uganda
Kerguelen Islands
Kiribati
Korea
Kosovo
Kosovo/Macedonia
Kuwait
Kyrgyzstan
Laos
Laos/Thailand
Latvia
Lebanon
Lebanon/Syria
Lesotho
Liberia
Libya
Lithuania
Luxembourg
Macedonia
Madagascar
Malawi
Malaysia
Malaysia/Singapore
Maldive Islands
Mali
Malta
Mariana Islands
Marquesas Islands
Marquesas/Society Islands
Marshall Islands
Martinique
Mascarene Islands
Mauritania
Mauritania/Western Sahara
Mauritius
Mexico
Mexico/Panama
Mexico/USA
Micronesia
Micronesia/Palau
Midway Atoll
Monaco
Mongolia
Montenegro
Montserrat
Morocco
Mozambique
Myanmar
Myanmar/Thailand
Namibia
Nauru
Navassa Island
Nepal
Netherlands
Netherlands Antilles
New Caledonia
New Zealand
Nicaragua
Niger
Nigeria
Niue
North Korea
Norway
Norway/Russia
Oman
Pakistan
Palau
Panama
Panama/Colombia
Papua New Guinea
Papua New Guinea/Solomon Islands
Paraguay
Peru
Peru-Bolivia
Philippines
Pitcairn Islands
Poland
Portugal
Portugal/Spain
Puerto Rico
Reunion
Romania
Russia
Russia/Japan
Russia/USA
Rwanda
Saba
Saint Barthelemy
Saint Helena
Saint Kitts and Nevis
Saint Lucia
Saint Martin/Sint Maarten
Saint Paul Island
Saint Pierre and Miquelon
Saint Vincent
Samoa
Samoa/American Samoa
San Marino
Sao Tome and Principe
Saudi Arabia
Senegal
Serbia
Seychelles
Sierra Leone
Singapore
Sint Eustatius
Slovakia
Slovenia
Society Islands
Solomon Islands
Somalia
South Africa
South Georgia
South Korea
South Orkneys
South Sandwich Islands
South Shetland Islands
South Sudan
Spain
Spratly Islands
Sri Lanka
St. Vincent & the Grenadines
Sudan
Suriname
Sweden
Switzerland
Syria
Taiwan
Taiwan/China
Tajikistan
Tanzania
Thailand
Thailand/Laos
Togo
Tonga
Trinidad and Tobago
Trinidad/Venezuela
Tristan da Cunha
Tuamotu Islands
Tunisia
Turkey
Turkmenistan
Turks & Caicos Islands
Turks and Caicos
Tuvalu
U.S. Line Islands
U.S. Virgin Islands
Uganda
Ukraine
United Arab Emirates
United Kingdom
Uruguay
US Virgin Islands
USA
USA/Canada
USA/Mexico
Uzbekistan
Vanuatu
Venezuela
Vietnam
Wake Atoll
Wallis and Futuna
Western Sahara
Western Samoa
Yemen
Yugoslavia
Zambia
Zambia/Zimbabwe
Zimbabwe