Antedonidae is a

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

crinoid Crinoids are marine invertebrates that make up the class Crinoidea. Crinoids that remain attached to the sea floor by a stalk in their adult form are commonly called sea lilies, while the unstalked forms, called feather stars or comatulids, are ...

s or feather stars in the phylum

Echinodermata An echinoderm () is any animal of the phylum Echinodermata (), which includes starfish, brittle stars, sea urchins, sand dollars and sea cucumbers, as well as the sessile sea lilies or "stone lilies". While bilaterally symmetrical as larvae, ...

. Members of the family are unstalked and have ten feathery arms. They can move about freely and have clawed cirri to attach them temporarily to structures.Family Antedonidae
Marine Species Identification Portal. Retrieved 2011-10-11.

Genera

The following genera are recognised by the World Register of Marine Species: * subfamily Antedoninae (Norman, 1865) ** genus '' Andrometra'' AH Clark, 1917 -- 2 species ** genus '' Annametra'' AH Clark, 1936 -- 2 species ** genus ''

Antedon ''Antedon'' is a genus of sessile, stemless crinoids found in shallow tropical and temperate marine environments worldwide. The genus first appears in the fossil record during the Cretaceous period. Characteristics Members of this genus have no s ...

'' de Fréminville, 1811 -- 14 species ** genus '' Ctenantedon'' Meyer, 1972 -- 1 species ** genus '' Dorometra'' Clark, 1917 -- 9 species ** genus '' Euantedon'' AH Clark, 1912 -- 6 species ** genus '' Eumetra'' AH Clark, 1908 -- 1 species ** genus '' Iridometra'' Clark, 1908 -- 3 species ** genus '' Mastigometra'' AH Clark, 1908 -- 3 species ** genus '' Toxometra'' AH Clark, 1911 -- 5 species * subfamily Bathymetrinae AH Clark, 1909 ** genus '' Argyrometra'' AH Clark, 1917 -- 2 species ** genus '' Bathymetra'' AH Clark, 1908 -- 2 species ** genus '' Boleometra'' AH Clark, 1936 -- 1 species ** genus '' Fariometra'' AH Clark, 1917 -- 11 species ** genus '' Hathrometra'' AH Clark, 1908 -- 1 species ** genus '' Meteorometra'' AM Clark, 1980 -- 1 species ** genus '' Nepiometra'' AH Clark, 1917 -- 1 species ** genus '' Orthometra'' AH Clark, 1917 -- 1 species ** genus '' Phrixometra'' Clark, 1921 -- 6 species ** genus '' Retiometra'' AH Clark, 1936 -- 1 species ** genus '' Thaumatometra'' AH Clark, 1908 -- 11 species ** genus '' Tonrometra'' AH Clark, 1917 -- 4 species ** genus '' Trichometra'' AH Clark, 1908 -- 3 species * subfamily Heliometrinae AH Clark, 1909 ** genus '' Anthometrina'' Eleaume, Hess & Messing, 2011 -- 1 species ** genus '' Comatonia'' AH Clark, 1916 -- 1 species ** genus '' Florometra'' AH Clark, 1913 -- 9 species ** genus '' Heliometra'' AH Clark, 1907 -- 1 species * subfamily Isometrainae Fet & Messing, 2003 ** genus '' Isometra'' AH Clark, 1908 -- 7 species * subfamily Perometrinae AH Clark, 1909 ** genus '' Erythrometra'' AH Clark, 1908 -- 3 species ** genus '' Helenametra'' AM Clark, 1966 -- 1 species ** genus '' Hypalometra'' AH Clark, 1908 -- 1 species ** genus '' Nanometra'' AH Clark, 1907 -- 3 species ** genus '' Perometra'' AH Clark, 1907 -- 4 species * subfamily Thysanometrinae AH Clark, 1909 ** genus '' Coccometra'' AH Clark, 1908 -- 3 species ** genus '' Thysanometra'' AH Clark, 1907 -- 2 species * unassigned ** genus '' Adelometra'' AH Clark, 1907 -- 1 species ** genus '' Anisometra'' John, 1939 -- 1 species ** genus '' Athrypsometra'' Messing & White, 2001 -- 4 species ** genus '' Balanometra'' Clark, 1909 -- 1 species ** genus '' Caryometra'' AH Clark, 1936 -- 6 species ** genus '' Cyclometra'' AH Clark, 1911 -- 2 species ** genus '' Eometra'' Clark, 1936 -- 2 species ** genus '' Eumorphometra'' Clark, 1915 -- 5 species ** genus '' Hybometra'' AH Clark, 1913 -- 1 species ** genus '' Kempometra'' John, 1938 -- 1 species ** genus '' Leptometra'' AH Clark, 1908 -- 2 species ** genus '' Microcomatula'' AH Clark, 1918 -- 1 species ** genus '' Poliometra'' AH Clark, 1923 -- 1 species ** genus ''

Promachocrinus ''Promachocrinus'' is a genus of free-swimming, stemless Crinoid, crinoids. It was a Monotypic taxon, monotypic genus, with the only species in the genus being ''Promachocrinus kerguelensis,'' until the discovery of four new species, establishmen ...

'' Carpenter, 1879 -- 5 species ** genus '' Solanometra'' Clark, 1911 -- 1 species

References

{{Taxonbar, from=Q2852646 Echinoderm families