Maretia

Maretia Temporal range: Eocene - Recent PreꞒ Ꞓ O S D C P T J K Pg N
Maretia planulata
Scientific classification
Kingdom:	Animalia
Phylum:	Echinodermata
Class:	Echinoidea
Order:	Spatangoida
Family:	Maretiidae
Genus:	Maretia Gray, 1855

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

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. ^[4]

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, Spain, Cuba, Indonesia, New Zealand, and Eritrea and Greece. ^[5]

References

1. Catalogue of life ^{[ permanent dead link ]}
2. Ubio
3. Kroh, A.; Mooi, R. (2021). "Maretia". WoRMS. World Register of Marine Species . Retrieved 23 September 2021.
4. Moore, R.C. (ed.). 1966-1978. Treatise on invertebrate paleontology. Parts S-U. Echinodermata. 2 Volumes. Geological Society of America and Univer-sity of Kansas, Kansas.
5. 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.)

External links

• Reef Guide
• Flickr
• Underwater Photographs by P. Rossi