Caudinidae Heding, 1931 (basis of record)
Chiridota Eschscholtz, 1829 (additional source)
Chiridota laevis (O. Fabricius, 1780) (additional source)
Chiridotidae Östergren, 1898 (additional source)
Cucumaria de Blainville, 1830 (additional source)
Cucumaria frondosa (Gunnerus, 1767) (additional source)
Cucumariidae Ludwig, 1894 (additional source)
Cucumariidae Ludwig, 1894 (identification resource)
Ekmania Hansen & McKenzie, 1991 (additional source)
Eupyrgus scaber Lütken, 1857 (additional source)
Molpadia Cuvier, 1817 (additional source)
Molpadiidae J. Müller, 1850 (additional source)
Pentamera Ayres, 1852 (additional source)
Pentamera calcigera (Stimpson, 1851) (additional source)
Pentamera pulcherrima Ayres, 1852 (basis of record)
Phyllophoridae Östergren, 1907 (identification resource)
Thyonidium Düben & Koren, 1846 (additional source)
Thyonidium pellucidum Düben & Koren, 1846, non Vahl, 1808 accepted as Ekmania barthii (Troschel, 1846) (additional source)

Arctic Ocean for Chiridota laevis (O. Fabricius, 1780) 
Arctic Ocean for Ekmania barthii (Troschel, 1846) 
Arctic Ocean for Eupyrgus scaber Lütken, 1857 
Arctic Ocean for Myriotrochus rinkii Steenstrup, 1851 
Arctic Ocean for Pentamera calcigera (Stimpson, 1851) 
Arctic Ocean for Psolus phantapus (Strussenfelt, 1765) 
Barents Sea for Chiridota laevis (O. Fabricius, 1780) 
Barents Sea for Cucumaria frondosa (Gunnerus, 1767) 
Barents Sea for Ekmania barthii (Troschel, 1846) 
Barents Sea for Eupyrgus scaber Lütken, 1857 
Barents Sea for Psolus phantapus (Strussenfelt, 1765) 
Bay of Biscay for Chiridota laevis (O. Fabricius, 1780)  (doubtful)
Bay of Biscay for Leptosynapta inhaerens (O.F. Müller, 1776) 
British Isles for Leptosynapta inhaerens (O.F. Müller, 1776) 
British Isles for Psolus phantapus (Strussenfelt, 1765) 
British Isles for Thyonidium drummondii (Thompson, 1840) 
Danish Exclusive Economic Zone for Ekmania barthii (Troschel, 1846) 
Danish Exclusive Economic Zone for Psolus phantapus (Strussenfelt, 1765) 
English Channel for Rhabdomolgus ruber Keferstein, 1862 
Faeroe Exclusive Economic Zone for Chiridota laevis (O. Fabricius, 1780) 
Faeroe Exclusive Economic Zone for Ekmania barthii (Troschel, 1846) 
Faeroe Exclusive Economic Zone for Leptosynapta inhaerens (O.F. Müller, 1776) 
Faeroe Exclusive Economic Zone for Myriotrochus vitreus (M. Sars, 1872) 
Faeroe Exclusive Economic Zone for Psolus phantapus (Strussenfelt, 1765) 
Faeroe Exclusive Economic Zone for Thyonidium drummondii (Thompson, 1840) 
French Exclusive Economic Zone [Atlantic part] for Leptosynapta inhaerens (O.F. Müller, 1776) 
German Exclusive Economic Zone for Ekmania barthii (Troschel, 1846) 
German Exclusive Economic Zone for Psolus phantapus (Strussenfelt, 1765) 
Greenlandic Exclusive Economic Zone for Chiridota laevis (O. Fabricius, 1780) 
Greenlandic Exclusive Economic Zone for Cucumaria frondosa (Gunnerus, 1767) 
Greenlandic Exclusive Economic Zone for Ekmania barthii (Troschel, 1846) 
Greenlandic Exclusive Economic Zone for Eupyrgus scaber Lütken, 1857 
Greenlandic Exclusive Economic Zone for Myriotrochus rinkii Steenstrup, 1851 
Greenlandic Exclusive Economic Zone for Pentamera calcigera (Stimpson, 1851) 
Greenlandic Exclusive Economic Zone for Psolus phantapus (Strussenfelt, 1765) 
Helgoland for Rhabdomolgus ruber Keferstein, 1862 
Icelandic Exclusive Economic Zone for Chiridota laevis (O. Fabricius, 1780) 
Icelandic Exclusive Economic Zone for Cucumaria frondosa (Gunnerus, 1767) 
Icelandic Exclusive Economic Zone for Ekmania barthii (Troschel, 1846) 
Icelandic Exclusive Economic Zone for Psolus phantapus (Strussenfelt, 1765) 
Kattegat for Leptosynapta inhaerens (O.F. Müller, 1776) 
Mediterranean Sea for Leptosynapta inhaerens (O.F. Müller, 1776) 
North East Atlantic for Cucumaria frondosa (Gunnerus, 1767) 
North Sea for Cucumaria frondosa (Gunnerus, 1767) 
North Sea for Leptosynapta inhaerens (O.F. Müller, 1776) 
North Sea for Thyonidium drummondii (Thompson, 1840) 
North West Atlantic for Cucumaria frondosa (Gunnerus, 1767) 
North West Atlantic for Eupyrgus scaber Lütken, 1857 
North West Atlantic for Pentamera calcigera (Stimpson, 1851) 
North West Atlantic for Psolus phantapus (Strussenfelt, 1765) 
Norwegian Exclusive Economic Zone for Chiridota laevis (O. Fabricius, 1780) 
Norwegian Exclusive Economic Zone for Cucumaria frondosa (Gunnerus, 1767) 
Norwegian Exclusive Economic Zone for Ekmania barthii (Troschel, 1846) 
Norwegian Exclusive Economic Zone for Leptosynapta inhaerens (O.F. Müller, 1776) 
Norwegian Exclusive Economic Zone for Myriotrochus rinkii Steenstrup, 1851 
Norwegian Exclusive Economic Zone for Myriotrochus vitreus (M. Sars, 1872) 
Norwegian Exclusive Economic Zone for Psolus phantapus (Strussenfelt, 1765) 
Norwegian Exclusive Economic Zone for Thyonidium drummondii (Thompson, 1840) 
Portuguese Exclusive Economic Zone for Leptosynapta inhaerens (O.F. Müller, 1776) 
Scotland for Cucumaria frondosa (Gunnerus, 1767) 
Shetlands for Cucumaria frondosa (Gunnerus, 1767) 
Shetlands for Ekmania barthii (Troschel, 1846) 
Shetlands for Psolus phantapus (Strussenfelt, 1765) 
Shetlands for Thyonidium drummondii (Thompson, 1840) 
Skagerrak for Myriotrochus vitreus (M. Sars, 1872) 
Spanish Exclusive Economic Zone [Atlantic part] for Myriotrochus vitreus (M. Sars, 1872) 
Spitsbergen for Chiridota laevis (O. Fabricius, 1780) 
Spitsbergen for Cucumaria frondosa (Gunnerus, 1767) 
Spitsbergen for Ekmania barthii (Troschel, 1846) 
Spitsbergen for Eupyrgus scaber Lütken, 1857 
Spitsbergen for Myriotrochus rinkii Steenstrup, 1851 
Spitsbergen for Psolus phantapus (Strussenfelt, 1765) 
Swedish Exclusive Economic Zone for Ekmania barthii (Troschel, 1846) 
Swedish Exclusive Economic Zone for Psolus phantapus (Strussenfelt, 1765) 
White Sea for Chiridota laevis (O. Fabricius, 1780) 

 Authority

 for Myriotrochus vitreus (M. Sars, 1872)

Madsen & Hansen (1994) refer to (Sars, 1866) as species authority source. [details]

 Authority

 for Ocnus glacialis (Ljungman, 1879)

(Ljungman, 1880) [details]

 Authority

 for Thyone gadeana Perrier R., 1898

R. Perrier, 1902 [details]

 Classification

 for Holothuria hyndmani Thompson, 1840

Madsen & Hansen (1994) prefer to keep hyndmani under Cucumaria Blainville, 1830. [details]

 Identification

 for Holothuria minuta Fabricius, 1780

Some misidentifications occurred. Siberian specimens of Holothuria minuta are referable to Ocnus glacialis. ... [details]

 Spelling

 for Labidoplax buskii (MacIntosh, 1866)

Madsen & Hansen (1994) use L. buski as spelling form [details]

 Spelling

 for Myriotrochus rinkii Steenstrup, 1851

Madsen & Hansen (1994) use M. rinki as spelling form. Type locality = SW Greenland [details]

 Synonymy

 for Leptopentacta elongata (Düben & Koren, 1846)

Synonymised with Trachythyone elongata (Düben & Koren, 1846) [details]

 Synonymy

 for Panningia hyndmanni (W. Thompson, 1840)

Madsen & Hansen (1994) are using the genus name Cucumaria for this species. The reason to keep hyndmani under ... [details]

 Synonymy

 for Stichopus tremulus (Gunnerus)

Madsen & Hansen (1994) regard Parastichopus H.L. Clark, 1922 as a synonym of Stichopus. [details]

 Taxonomy

 for Dactylochirotida

Pawson & Fell (1965) subdivided the order Dendrochirota into the new order Dactylochirotida and the Dendrochirotida ... [details]

 Taxonomy

 for Laetmogone Théel, 1879

Family Molpadiidae restricted by Heding, 1931 [details]

 Taxonomy

 for Ocnus brunneus (Forbes in Thompson, 1840)

The taxonomic status of O. brunneus is uncertain, due to geographical and intra-specific variation in body colour, ... [details]

 Taxonomy

 for Pseudothyone serrifera (Östergren, 1898)

The species is here transferred from Thyone to Pseudothyone since Panning (1949) restricted Thyone to species with ... [details]

 Taxonomy

 for Psolus valvatus Östergren, 1904

Synonymy established by Ekman (1923). [details]

 Taxonomy

 for Thyone cherbonnieri Reys, 1959

Reys (1959) referred the specimens identified as T. gadeana by Madsen to a new species T. cherbonnieri on the basis ... [details]

 Taxonomy

 for Thyone fusus (O.F. Müller, 1776)

Madsen (1941) referred the Mediterranean specimens of Tyone fusus to a new subspecies T. fusus mediterranea. [details]

 Taxonomy

 for Thyonidium hyalinum (Forbes, 1841)

T. hyalinum(Forbes) was re-established by Hansen & McKenzie (1991) after T. pellucidum sensu Düben & Koren was not ... [details]

 Type species

 for Pentamera calcigera (Stimpson, 1851)

probably lost or not kept [details]

 Type specimen

 for Thyone flexus Hodge, 1865

This species is known only from the description of the now lost type specimen taken off Northumberland. T. flexus ... [details]

 Validity

 for Molpadia borealis arctica von Marenzeller, 1877

considered as a valid subspecies by Madsen & Hansen (1994) [details]