Andaman for Ptychodera viridis Punnett, 1903 
Andaman and Nicobar Islands for Balanoglossus carnosus Müller in Spengel, 1893 
Andaman and Nicobar Islands for Ptychodera flava Eschscholtz, 1825 
Antarctic Peninsula for Cephalodiscus fumosus John, 1931 
Antarctic Peninsula for Cephalodiscus hodgsoni Ridewood, 1907 
Antarctic Peninsula for Cephalodiscus nigrescens Lankester, 1905 
Azores Canaries Madeira for Rhabdopleura normani Allman, 1869 
Bahamian for Saccoglossus caraibicus van der Horst, 1924 
Baltic Sea for Glossobalanus marginatus Meek, 1922 
Bassian for Rhabdopleura annulata Norman, 1921 
Bermuda for Rhabdopleura compacta Hincks, 1880 
Bermuda for Rhabdopleura normani Allman, 1869 
Cape Howe for Rhabdopleura annulata Norman, 1921 
Carolinian for Ptychodera bahamensis Spengel, 1893 
Carolinian for Saccoglossus kowalevskii (Agassiz, 1873) 
Celtic Seas for Balanoglossus clavigerus Delle Chiaje, 1829 
Celtic Seas for Rhabdopleura compacta Hincks, 1880 
Celtic Seas for Saccoglossus ruber Tattersall, 1905 
Central Kuroshio Current for Balanoglossus carnosus Müller in Spengel, 1893 
Central New Zealand for Balanoglossus australiensis Hill, 1894 
Chagos for Ptychodera flava Eschscholtz, 1825 
East Antarctic Wilkes Land for Cephalodiscus hodgsoni Ridewood, 1907 
East Antarctic Wilkes Land for Cephalodiscus nigrescens Lankester, 1905 
East Greenland Shelf for Harrimania kupfferi (von Willemoes-Suhm, 1871) 
Floridian for Balanoglossus gigas (Müller in Spengel, 1893) 
Floridian for Ptychodera bahamensis Spengel, 1893 
Floridian for Rhabdopleura compacta Hincks, 1880 
Floridian for Schizocardium brasiliense Spengel, 1893 
Greater Antilles for Balanoglossus gigas (Müller in Spengel, 1893) 
Greater Antilles for Ptychodera bahamensis Spengel, 1893 
Greater Antilles for Saccoglossus caraibicus van der Horst, 1924 
Gulf of Maine/Bay of Fundy for Saccoglossus kowalevskii (Agassiz, 1873) 
Gulf of Maine/Bay of Fundy for Stereobalanus canadensis (Spengel, 1893) 
Gulf of St. Lawrence - Eastern Scotian Shelf for Saccoglossus bromophenolosus King, Giray & Kornfield, 1994 
Gulf of St. Lawrence - Eastern Scotian Shelf for Saccoglossus kowalevskii (Agassiz, 1873) 
Gulf of St. Lawrence - Eastern Scotian Shelf for Stereobalanus canadensis (Spengel, 1893) 
Hawaii for Ptychodera flava Eschscholtz, 1825 
Ionian Sea for Balanoglossus clavigerus Delle Chiaje, 1829 
Magellanic for Cephalodiscus hodgsoni Ridewood, 1907 
Magellanic for Rhabdopleura normani Allman, 1869 
Maldives for Ptychodera flava Eschscholtz, 1825 
Maldives for Spengelia porosa Willey, 1898 
Mediterranean Sea for Rhabdopleura normani Allman, 1869 
North and East Barents Sea for Rhabdopleura normani Allman, 1869 
North Sea for Glossobalanus sarniensis (Koehler, 1886) 
North Sea for Harrimania kupfferi (von Willemoes-Suhm, 1871) 
North Sea for Rhabdopleura compacta Hincks, 1880 
North Sea for Rhabdopleura normani Allman, 1869 
North Sea for Stereobalanus canadensis (Spengel, 1893) 
Northern Gulf of Mexico for Ptychodera bahamensis Spengel, 1893 
Northern Gulf of Mexico for Schizocardium brasiliense Spengel, 1893 
Northern Norway and Finnmark for Rhabdopleura normani Allman, 1869 
Ross Sea for Cephalodiscus fumosus John, 1931 
Ross Sea for Cephalodiscus hodgsoni Ridewood, 1907 
Ross Sea for Cephalodiscus nigrescens Lankester, 1905 
Ross Sea for Cephalodiscus solidus Andersson, 1907 
Scotian Shelf for Saccoglossus kowalevskii (Agassiz, 1873) 
South Georgia for Cephalodiscus hodgsoni Ridewood, 1907 
South Georgia for Cephalodiscus kempi John, 1932 
South India and Sri Lanka for Ptychodera flava Eschscholtz, 1825 
Southeastern Brazil for Balanoglossus clavigerus Delle Chiaje, 1829 
Southern Caribbean for Saccoglossus caraibicus van der Horst, 1924 
Southern Grand Banks - South Newfoundland for Stereobalanus canadensis (Spengel, 1893) 
Southern Gulf of Mexico for Balanoglossus gigas (Müller in Spengel, 1893) 
Southern Gulf of Mexico for Ptychodera bahamensis Spengel, 1893 
Southern New Zealand for Rhabdopleura annulata Norman, 1921 
Southern Norway for Rhabdopleura normani Allman, 1869 
Virginian for Saccoglossus kowalevskii (Agassiz, 1873) 
Virginian for Stereobalanus canadensis (Spengel, 1893) 
Weddell Sea for Cephalodiscus fumosus John, 1931 
Weddell Sea for Cephalodiscus hodgsoni Ridewood, 1907 
Weddell Sea for Cephalodiscus nigrescens Lankester, 1905 
Western and Northern Madagascar for Spengelia porosa Willey, 1898 
White Sea for Saccoglossus mereschkowskii (Wagner, 1885)