Table 2 Taxonomic overview of hexactinellid genera

Amphidiscophora

Amphidiscosida

  Hyalonema

Gray, 1832

120

Hyalonematidae

  Chalaronema

Ijima, 1927

1

Hyalonematidae

  Compsocalyx

Schulze, 1904

1

Hyalonematidae

  Lophophysema

Schulze, 1900

4

Hyalonematidae

  Tabachnickia

Özdikmen, 2010

1

Hyalonematidae

  Monorhaphis

Schulze, 1904

1

Monorhaphididae

  Pheronema

Leidy, 1868

18

Pheronematidae

  Platylistrum

Schulze, 1904

1

Pheronematidae

  Poliopogon

Thomson, 1878

6

Pheronematidae

  Schulzeviella

Tabachnick, 1990

1

Pheronematidae

  Semperella

Gray, 1868

11

Pheronematidae

  Sericolophus

Ijima, 1901

5

Pheronematidae

Hexasterophora

Lyssacinosida

  Euplectella

Owen, 1841

17

Euplectellinae

Euplectellidae

  Acoelocalyx

Topsent, 1910

1

Euplectellinae

Euplectellidae

  Chaunangium

Schulze, 1904

1

Euplectellinae

Euplectellidae

  Docosaccus

Topsent, 1910

2

Euplectellinae

Euplectellidae

  Holascus

Schulze, 1886

15

Euplectellinae

Euplectellidae

  Malacosaccus

Schulze, 1886

7

Euplectellinae

Euplectellidae

  Placopegma

Schulze, 1895

2

Euplectellinae

Euplectellidae

  Bolosoma

Ijima, 1904

8

Bolosominae

Euplectellidae

  Amphidiscella

Tabachnick & Lévi, 1997

4

Bolosominae

Euplectellidae

  Caulocalyx

Schulze, 1886

1

Bolosominae

Euplectellidae

  Hyalostylus

Schulze, 1886

2

Bolosominae

Euplectellidae

  Neocaledoniella

Tabachnick & Lévi, 2004

1

Bolosominae

Euplectellidae

  Rhabdopectella ^a

Schmidt, 1880

1

Bolosominae

Euplectellidae

  Saccocalyx

Schulze, 1896

3

Bolosominae

Euplectellidae

  Trachycaulus

Schulze, 1886

1

Bolosominae

Euplectellidae

  Vityaziella

Tabachnick & Lévi, 1997

1

Bolosominae

Euplectellidae

  Corbitella

Gray, 1867

4

Corbitellinae

Euplectellidae

  Atlantisella

Tabachnick, 2002

1

Corbitellinae

Euplectellidae

  Dictyaulus

Schulze, 1896

4

Corbitellinae

Euplectellidae

  Dictyocalyx

Schulze, 1886

2

Corbitellinae

Euplectellidae

  Hertwigia

Schmidt, 1880

1

Corbitellinae

Euplectellidae

  Heterotella

Gray, 1867

4

Corbitellinae

Euplectellidae

  Ijimaiella

Tabachnick, 2002

1

Corbitellinae

Euplectellidae

  Pseudoplectella

Tabachnick, 1990

1

Corbitellinae

Euplectellidae

  Regadrella

Schmidt, 1880

8

Corbitellinae

Euplectellidae

  Walteria

Schulze, 1886

2

Corbitellinae

Euplectellidae

  Leucopsacus

Ijima, 1898

4

Leucopsacidae

  Oopsacas

Topsent, 1927

4

Leucopsacidae

  Chaunoplectella

Ijima, 1896

1

Leucopsacidae

  Rossella

Carter, 1872

20

Rossellinae

Rossellidae

  Anoxycalyx

Kirkpatrick, 1907

3

Rossellinae

Rossellidae

  Aphorme

Schulze, 1899

1

Rossellinae

Rossellidae

  Asconema

Kent, 1870

5

Rossellinae

Rossellidae

  Aulosaccus

Ijima, 1896

5

Rossellinae

Rossellidae

  Bathydorus

Schulze, 1886

7

Rossellinae

Rossellidae

  Crateromorpha

Gray in Carter, 1872

15

Rossellinae

Rossellidae

  Hyalascus

Ijima, 1896

9

Rossellinae

Rossellidae

  Nodastrella

Dohrmann, Göcke, Reed & Janussen, 2012

2

Rossellinae

Rossellidae

  Schaudinnia

Schulze, 1900

1

Rossellinae

Rossellidae

  Scyphidium

Schulze, 1900

8

Rossellinae

Rossellidae

  Symplectella

Dendy, 1924

1

Rossellinae

Rossellidae

  Trichasterina

Schulze, 1900

2

Rossellinae

Rossellidae

  Vazella

Gray, 1870

1

Rossellinae

Rossellidae

  Vitrollula

Ijima, 1898

1

Rossellinae

Rossellidae

  Acanthascus

Schulze, 1886

7

Acanthascinae

Rossellidae

  Rhabdocalyptus

Schulze, 1886

18

Acanthascinae

Rossellidae

  Staurocalyptus

Ijima, 1897

17

Acanthascinae

Rossellidae

  Lanuginella

Schmidt, 1870

1

Lanuginellinae

Rossellidae

  Calycosoma

Schulze, 1899

1

Lanuginellinae

Rossellidae

  Caulophacella ^b

Lendenfeld, 1915

1

Lanuginellinae

Rossellidae

  Caulophacus

Schulze, 1886

26

Lanuginellinae

Rossellidae

  Doconesthes

Topsent, 1928

2

Lanuginellinae

Rossellidae

  Lanugonychia

Lendenfeld, 1915

1

Lanuginellinae

Rossellidae

  Lophocalyx

Schulze, 1887

12

Lanuginellinae

Rossellidae

  Mellonympha

Schulze, 1897

1

Lanuginellinae

Rossellidae

  Sympagella

Schmidt, 1870

9

Lanuginellinae

Rossellidae

  Clathrochone

Tabachnick, 2002

1

incertae sedis

  Hyaloplacoida

Tabachnick, 1989

1

incertae sedis

Hexactinosida

(Sceptrulophora)

  Aphrocallistes

Gray, 1858

2

Aphrocallistidae

  Heterochone

Ijima, 1927

4

Aphrocallistidae

  Auloplax

Schulze, 1904

4

Auloplacidae

  Dictyoplax

Reiswig & Dohrmann, 2014

1

Auloplacidae

  Laocoetis

Pomel, 1872

1

Craticulariidae

  Stereochlamis

Schrammen, 1912

1

Cribrospongiidae

  Eurete

Semper, 1868

12

Euretinae

Euretidae

  Calyptorete

Okada, 1925

1

Euretinae

Euretidae

  Conorete

Ijima, 1927

5

Euretinae

Euretidae

  Endorete

Topsent, 1928

1

Euretinae

Euretidae

  Gymnorete

Ijima, 1927

3

Euretinae

Euretidae

  Heterorete

Dendy, 1916

1

Euretinae

Euretidae

  Homoieurete

Reiswig & Kelly, 2011

1

Euretinae

Euretidae

  Lefroyella

Thomson, 1878

2

Euretinae

Euretidae

  Pararete

Ijima, 1927

7

Euretinae

Euretidae

  Pityrete

Topsent, 1928

1

Euretinae

Euretidae

  Chonelasma

Schulze, 1886

10

Chonelasmatinae

Euretidae

  Bathyxiphus

Schulze, 1899

1

Chonelasmatinae

Euretidae

  Myliusia

Gray, 1859

4

Chonelasmatinae

Euretidae

  Periphragella

Marshall, 1875

6

Chonelasmatinae

Euretidae

  Pinulasma

Reiswig & Stone, 2013

1

Chonelasmatinae

Euretidae

  Pleurochorium

Schrammen, 1912

2

Chonelasmatinae

Euretidae

  Tretochone

Reid, 1958

1

Chonelasmatinae

Euretidae

  Verrucocoeloidea

Reid, 1969

2

Chonelasmatinae

Euretidae

  Farrea

Bowerbank, 1862

30

Farreidae

  Asceptrulum

Duplessis & Reiswig, 2004

1

Farreidae

  Aspidoscopulia

Reiswig, 2002

5

Farreidae

  Claviscopulia

Schulze, 1899

1

Farreidae

  Lonchiphora

Ijima, 1927

2

Farreidae

  Fieldingia

Kent, 1870

2

Fieldingiidae

  Tretodictyum

Schulze, 1886

7

Tretodictyidae

  Anomochone

Ijima, 1927

3

Tretodictyidae

  Cyrtaulon

Schulze, 1886

2

Tretodictyidae

  Hexactinella

Carter, 1885

14

Tretodictyidae

  Psilocalyx

Ijima, 1927

1

Tretodictyidae

  Sclerothamnopsis

Wilson, 1904

2

Tretodictyidae

  Sclerothamnus

Marshall, 1875

1

Tretodictyidae

  Tretocalyx

Schulze, 1901

1

Tretodictyidae

  Sarostegia

Topsent, 1904

1

incertae sedis

Hexactinosida

  Dactylocalyx

Stutchbury, 1841

2

Dactylocalycidae

  Iphiteon

Bowerbank, 1869

1

Dactylocalycidae

Aulocalycoida

  Aulocalyx

Schulze, 1886

3

Aulocalycinae

Aulocalycidae

  Euryplegma

Schulze, 1886

1

Aulocalycinae

Aulocalycidae

  Ijimadictyum

Mehl, 1992

1

Aulocalycinae

Aulocalycidae

  Indiella

Sautya, Tabachnick & Ingole, 2011

1

Aulocalycinae

Aulocalycidae

  Leioplegma

Reiswig & Tsurumi, 1996

1

Aulocalycinae

Aulocalycidae

  Rhabdodictyum

Schmidt, 1880

1

Aulocalycinae

Aulocalycidae

  Cyathella

Schmidt, 1880

1

Cyathellinae

Aulocalycidae

  Uncinatera

Topsent, 1901

1

Uncinateridae

  Tretopleura

Ijima, 1927

2

Uncinateridae

Lychniscosida

  Neoaulocystis

Zhuravleva, 1962

4

Aulocystidae

  Lychnocystis

Reiswig, 2002

1

Aulocystidae

  Scleroplegma

Schmidt, 1880

2

Diapleuridae