''Cidaris nuda'' is a species of

sea urchin Sea urchins () are spiny, globular echinoderms in the class Echinoidea. About 950 species of sea urchin live on the seabed of every ocean and inhabit every depth zone from the intertidal seashore down to . The spherical, hard shells (tests) of ...

s of the

Family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...

Cidaridae Cidaridae is a family of sea urchins in the order Cidaroida. Description and characteristics Cidarid sea urchins are characterized by their stout skeleton : the test is thick and hard, with massive perforated tubercles (never crenulated) sur ...

. Their armour is covered with spines. ''Cidaris nuda'' was first scientifically described in 1903 by

Ole Mortensen Ole Henrik Mortensen (born 29 January 1958) is a Danish first-class cricketer, probably the best his country has produced. A fast-medium right-arm bowler, in a first-class career with Derbyshire that ran from 1983 to 1994 he took 434 wickets at ...

.Kroh, A. (2010). ''Cidaris nuda'' (Mortensen, 1903). In: Kroh, A. & Mooi, R. (2010
World Echinoidea Database
at the

World Register of Marine Species The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive list of names of marine organisms. Content The content of the registry is edited and maintained by scientific specialist ...

References

Animals described in 1903 Cidaridae Taxa named by Ole Theodor Jensen Mortensen {{echinoidea-stub

See also

References