Arachnoididae is a family of echinoderms of the

order Order, ORDER or Orders may refer to: * Categorization, the process in which ideas and objects are recognized, differentiated, and understood * Heterarchy, a system of organization wherein the elements have the potential to be ranked a number of d ...

Clypeasteroida.

Genera

* ''

Ammotrophus ''Ammotrophus'' is a genus of echinoderms belonging to the family Clypeasteridae Clypeasteridae is a family of sea urchins in the order Clypeasteroida. This family was first scientifically described in 1835 by the Swiss-American biologist Louis ...

'' H. L. Clark, 1928 * '' Arachnoides'' Leske, 1778 * ''

Fellaster ''Fellaster'' is a genus of echinoderms belonging to the family Clypeasteridae. The species of this genus are found in Australia and New Zealand. Species: *'' Fellaster incisa'' *''Fellaster zelandiae ''Fellaster zelandiae'', which is also ...

'' Durham, 1955 * '' Fossulaster'' Lambert & Thiery, 1925 * '' Monostychia'' Laube, 1869 * '' Philipaster'' Wang, 1994 * '' Prowillungaster'' Wang, 1994 * '' Scutellinoides'' Durham, 1955 * '' Willungaster'' Philip & Foster, 1971

References

Natural History Museum
Clypeasteroida Echinoderm families {{echinoidea-stub