Cucumaria de Blainville, 1830 (additional source)
Cucumaria frondosa (Gunnerus, 1767) (additional source)
Cucumariidae Ludwig, 1894 (additional source)
Cucumariidae Ludwig, 1894 (identification resource)
Holothuria frondosa Gunnerus, 1767 accepted as Cucumaria frondosa (Gunnerus, 1767) (additional source)
Holothuria fusus O.F. Müller, 1776 accepted as Thyone fusus (O.F. Müller, 1776) (additional source)
Holothuria lactea Forbes & Goodsir, 1839 accepted as Ocnus lacteus (Forbes & Goodsir, 1839) (additional source)
Neopentadactyla Deichmann, 1944 (additional source)
Neopentadactyla mixta (Östergren, 1898) Deichmann, 1944 (additional source)
Ocnus Forbes & Goodsir in Forbes, 1841 (additional source)
Ocnus lacteus (Forbes & Goodsir, 1839) (additional source)
Ocnus planci (Brandt, 1835) (additional source)
Phyllophoridae Östergren, 1907 (identification resource)
Pseudocucumis Ludwig, 1875 accepted as Cladolabes Brandt, 1835 (additional source)
Pseudocucumis mixta Östergren, 1898 accepted as Neopentadactyla mixta (Östergren, 1898) Deichmann, 1944 (additional source)
Thyone fusus (O.F. Müller, 1776) (additional source)

Africa for Leptosynapta minuta (Becher, 1906) 
Barents Sea for Cucumaria frondosa (Gunnerus, 1767) 
Bay of Biscay for Neopentadactyla mixta (Östergren, 1898) Deichmann, 1944 
Belgian Exclusive Economic Zone for Ocnus planci (Brandt, 1835) 
British Isles for Leptosynapta minuta (Becher, 1906) 
British Isles for Neopentadactyla mixta (Östergren, 1898) Deichmann, 1944 
British Isles for Thyone fusus (O.F. Müller, 1776) 
English Channel for Neopentadactyla mixta (Östergren, 1898) Deichmann, 1944 
Faeroe Exclusive Economic Zone for Neopentadactyla mixta (Östergren, 1898) Deichmann, 1944 
Faeroe Exclusive Economic Zone for Thyone fusus (O.F. Müller, 1776) 
French Exclusive Economic Zone [Atlantic part] for Neopentadactyla mixta (Östergren, 1898) Deichmann, 1944 
Galicia for Leptosynapta minuta (Becher, 1906) 
Greenlandic Exclusive Economic Zone for Cucumaria frondosa (Gunnerus, 1767) 
Helgoland for Leptosynapta minuta (Becher, 1906) 
Icelandic Exclusive Economic Zone for Cucumaria frondosa (Gunnerus, 1767) 
Icelandic Exclusive Economic Zone for Ocnus lacteus (Forbes & Goodsir, 1839) 
Icelandic Exclusive Economic Zone for Thyone fusus (O.F. Müller, 1776) 
Irish Exclusive economic Zone for Neopentadactyla mixta (Östergren, 1898) Deichmann, 1944 
Irish Exclusive economic Zone for Ocnus lacteus (Forbes & Goodsir, 1839) 
Mediterranean Sea for Leptosynapta minuta (Becher, 1906) 
Mediterranean Sea for Ocnus lacteus (Forbes & Goodsir, 1839) 
Mediterranean Sea for Ocnus planci (Brandt, 1835) 
North East Atlantic for Cucumaria frondosa (Gunnerus, 1767) 
North East Atlantic for Ocnus planci (Brandt, 1835) 
North Sea for Cucumaria frondosa (Gunnerus, 1767) 
North Sea for Neopentadactyla mixta (Östergren, 1898) Deichmann, 1944 
North Sea for Thyone fusus (O.F. Müller, 1776) 
North West Atlantic for Cucumaria frondosa (Gunnerus, 1767) 
Norwegian Exclusive Economic Zone for Cucumaria frondosa (Gunnerus, 1767) 
Norwegian Exclusive Economic Zone for Neopentadactyla mixta (Östergren, 1898) Deichmann, 1944 
Norwegian Exclusive Economic Zone for Ocnus lacteus (Forbes & Goodsir, 1839) 
Norwegian Exclusive Economic Zone for Thyone fusus (O.F. Müller, 1776) 
Scotland for Cucumaria frondosa (Gunnerus, 1767) 
Shetlands for Cucumaria frondosa (Gunnerus, 1767) 
Shetlands for Neopentadactyla mixta (Östergren, 1898) Deichmann, 1944 
Shetlands for Ocnus lacteus (Forbes & Goodsir, 1839) 
Spitsbergen for Cucumaria frondosa (Gunnerus, 1767) 
United Kingdom Exclusive Economic Zone for Ocnus lacteus (Forbes & Goodsir, 1839)