Camarodonta

The Camarodonta are an order of globular sea urchins in the class Echinoidea. The fossil record shows that camarodonts have been in existence since the Lower Cretaceous.^[2]

Camarodonta
Paracentrotus lividus
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Echinodermata
Class:	Echinoidea
Superorder:	Echinacea
Order:	Camarodonta Jackson, 1912 [1]
Families
See text

Characteristics

All camarodonts have imperforate tubercles and compound ambulacral plates with the lowest elements enlarged. The pores are at regular intervals along the ambulacral plates from the apex to the mouth opening or peristome. The Aristotle's lantern, or jaw system, has keeled teeth with the supports meeting above the "foramen magnum".^[2]

Families

According to World Register of Marine Species:^[1]

• Infraorder Echinidea (Kroh & Smith, 2010)
  • Family Echinidae (Gray, 1825)
  • Superfamily Odontophora (Kroh & Smith, 2010)
    • Family Echinometridae (Gray, 1855)
    • Family Strongylocentrotidae (Gregory, 1900)
    • Family Toxopneustidae (Troschel, 1872)
  • Family Parechinidae (Mortensen, 1903b)
• Family Parasaleniidae (Mortensen, 1903b)
• Infraorder Temnopleuridea (Kroh & Smith, 2010)
  • Family Temnopleuridae (A. Agassiz, 1872)
  • Family Trigonocidaridae (Mortensen, 1903b)

• 
  Echinus esculentus, Echinidae
• 
  Echinometra lucunter, Echinometridae
• 
  Strongylocentrotus franciscanus, Strongylocentrotidae
• 
  Tripneustes ventricosus, Toxopneustidae
• 
  Paracentrotus lividus, Parechinidae
• 
  Parasalenia poehlii, Parasaleniidae
• 
  Microcyphus rousseaui, Temnopleuridae
• 
  Asterechinus elegans, Trigonocidaridae

References

1. Camarodonta World Register of Marine Species. Retrieved 2011-08-27.
2. The Echinoid Directory The Natural History Museum. Retrieved 2011-08-27.