''Aspidodiadema arcitum'' is a species of

sea urchin Sea urchins or urchins () are echinoderms in the class (biology), class Echinoidea. About 950 species live on the seabed, inhabiting all oceans and depth zones from the intertidal zone to deep seas of . They typically have a globular body cove ...

of the family Aspidodiadematidae. Their armour is covered with spines. It is placed in the genus Aspidodiadema and lives in the sea. ''Aspidodiadema arcitum'' was first scientifically described in 1939 by

Ole Theodor Jensen Mortensen Ole Theodor Jensen Mortensen, also known as Theodor Mortensen (22 February 1868, Harløse, Hillerød – 3 April 1952) was a Danish scientist and professor at the Zoological Museum, Copenhagen. He specialized in sea urchin Sea urchins or ur ...

, a Danish scientist.

References

arcitum Animals described in 1939 Taxa named by Ole Theodor Jensen Mortensen {{echinoidea-stub