Maretia

Maretia is a genus of heart urchins belonging to the family Spatangidae.[1][2]

Maretia
Temporal range: Eocene - Recent
Maretia planulata
Scientific classification
Kingdom:
Animalia
Phylum:
Echinodermata
Class:
Echinoidea
Superorder:
Atelostomata
Order:
Spatangoida
Family:
Spatangidae
Genus:
Maretia

Gray, 1855

Species
  • Maretia carinata Bolau, 1873
  • Maretia cordata Mortensen, 1948
  • Maretia estenozi Sánchez Roig, 1926 †
  • Maretia planulata (Lamarck, 1816)[3]

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 of Maretia pavesi from Miocene of Italy

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, Cuba, Indonesia, New Zealand, and Eritrea and Greece.[4]

References
  1. Catalogue of life
  2. Ubio
  3. WoRMS
  4. Paleobiologhy Database
  • Rowe, F.W.E & Gates, J. (1995). Echinodermata. In ‘Zoological Catalogue of Australia’. 33 (Ed A. Wells.) pp xiii + 510 (CSIRO Australia, Melbourne.)
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