Maretia
Maretia is a genus of heart urchins belonging to the family Spatangidae.
Species
Maretia carinata Bolau, 1873 Maretia cordata Mortensen, 1948 Maretia estenozi Sánchez Roig, 1926
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.
Fossils of Maretia are found in marine strata from the Eocene until the Quaternary. Fossils are known from some localities in United Kingdom, United States, Germany, Spain, Cuba, Indonesia, New Zealand, and Eritrea and Greece.