Class Echinoidea Family Arachnoididae | Order Clypeasteroida Genus Ammotrophus | |
Ammotrophus cyclius is a species of sand dollar of the family Arachnoididae. Their external skeleton [test] is covered with spines. It belongs to from the genus Ammotrophus and lives in the seas off southern Australia. Ammotrophus cyclius was first scientifically described in 1928 by Hubert Lyman Clark.
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Ammotrophus cyclius Wikipedia(Text) CC BY-SA