Species
* ''Maretia carinata'' Bolau, 1873 * ''Maretia cordata'' Ole Theodor Jensen Mortensen, Mortensen, 1948 * ''Maretia estenozi'' Sánchez Roig, 1926 * ''Maretia planulata'' (Jean-Baptiste Lamarck, Lamarck, 1816)Description
These sea urchins are irregular, as the mouth is located at the front of the underside of the animal, while the anus is located in rear end position.Fossil record
Fossils of ''Maretia'' are found in marine strata from the Eocene until the Quaternary (age range: from 40.4 to 0.012 million years ago.). Fossils are known from some localities in United Kingdom, United States, Germany, Spain, Cuba, Indonesia, New Zealand, and Eritrea and Greece.References
* Rowe, F.W.E & Gates, J. (1995). Echinodermata. In ‘Zoological Catalogue of Australia’. 33 (Ed A. Wells.) pp xiii + 510 (CSIRO Australia, Melbourne.)External links