Scleraxonia

Scleraxonia is a suborder of corals, a member of the phylum Cnidaria.

Characteristics
Members of Scleraxonia have a skeletal axis made of calcified spicules, organic fibres or both, which may be separate, linked or fused together.

Families and genera
There are nine recognised families in this suborder and over thirty genera, with four families (Anthothelidae, Briareidae, Coralliidae and Subergorgiidae) containing some deep-water species and two families (Paragorgiidae and Parisididae) being exclusively deep water.

Families and genera in this suborder include:
 * Anthothelidae Broch, 1916
 * Alertigorgia Kükenthal, 1908
 * Anthothela Verrill, 1879
 * Briareopsis Bayer, 1993
 * Erythropodium Kölliker, 1865
 * Iciligorgia Duchassaing, 1870
 * Lateothela Moore, Alderslade & Miller, 2017
 * Solenocaulon Gray, 1862
 * Stereogorgia
 * Tubigorgia Pasternak, 1985
 * Williamsium Moore, Alderslade & Miller, 2017
 * Briareidae Gray, 1859
 * Briareum Blainville, 1834
 * Lignopsis Perez & Zamponi, 2000
 * Pseudosuberia Kükenthal, 1919
 * Coralliidae Lamouroux, 1812
 * Corallium Cuvier, 1798
 * Hemicorallium Gray, 1867
 * Paracorallium Bayer & Cairns, 2003
 * Melithaeidae Gray, 1870
 * Asperaxis Alderslade, 2007
 * Melithaea Milne-Edwards, 1857
 * Paragorgiidae Kukenthal, 1916
 * Paragorgia Milne-Edwards, 1857
 * Sibogagorgia Stiasny, 1937
 * Parisididae Aurivillius, 1931
 * Parisis Verrill, 1864
 * Spongiodermidae Wright & Studer, 1889
 * Callipodium Verrill, 1876
 * Diodogorgia Kuekenthal, 1919
 * Homophyton Gray, 1866
 * Sclerophyton Cairns & Wirshing, 2015
 * Titanideum Verrill, 1864
 * Tripalea Bayer, 1955
 * Subergorgiidae Gray, 1859
 * Annella Gray, 1858
 * Rosgorgia Lopez Gonzalez & Gili, 2001
 * Subergorgia Gray, 1857
 * Victorgorgiidae Moore, Alderslade & Miller, 2017
 * Victorgorgia Lopez Gonzalez & Briand, 2002