The Camarodonta are an

order Order, ORDER or Orders may refer to: * A socio-political or established or existing order, e.g. World order, Ancien Regime, Pax Britannica * Categorization, the process in which ideas and objects are recognized, differentiated, and understood ...

of globular

sea urchin Sea urchins or urchins () are echinoderms in the class (biology), class Echinoidea. About 950 species live on the seabed, inhabiting all oceans and depth zones from the intertidal zone to deep seas of . They typically have a globular body cove ...

s in the

class Class, Classes, or The Class may refer to: Common uses not otherwise categorized * Class (biology), a taxonomic rank * Class (knowledge representation), a collection of individuals or objects * Class (philosophy), an analytical concept used d ...

Echinoidea Sea urchins or urchins () are echinoderms in the class Echinoidea. About 950 species live on the seabed, inhabiting all oceans and depth zones from the intertidal zone to deep seas of . They typically have a globular body covered by a spiny ...

. The fossil record shows that camarodonts have been in existence since the

Lower Cretaceous Lower may refer to: * ''Lower'' (album), 2025 album by Benjamin Booker * Lower (surname) * Lower Township, New Jersey *Lower Receiver (firearms) * Lower Wick Gloucestershire, England See also * Nizhny {{Disambiguation ...

.The Echinoid Directory
The Natural History Museum. Retrieved 2011-08-27.

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".

Families

According to

World Register of Marine Species The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive catalogue and list of names of marine organisms. Content The content of the registry is edited and maintained by scien ...

: * Infraorder Echinidea (Kroh & Smith, 2010) ** Family

Echinidae Echinidae is a family of sea urchins in the order Camarodonta. Members of the family are found in the Atlantic Ocean and the Antarctic.Odontophora (Kroh & Smith, 2010) *** Family

Echinometridae The Echinometridae are a Family (biology), family of sea urchins in the class (biology), class Echinoidea. Characteristics All Echinometridae have imperforate tubercles and compound ambulacral plates.Strongylocentrotidae The Strongylocentrotidae are a family (biology), family of sea urchins in the order (biology), order Camarodonta. Genera References

Strongylocentrotidae, Echinoderm families {{echinoidea-stub ...

(Gregory, 1900) *** Family

Toxopneustidae Toxopneustidae is a family of globular sea urchins in the class Echinoidea. Characteristics All Camarodonts have imperforate tubercles and compound ambulacral plates. In addition, the Toxopneustids are characterised by the peristome, or opening t ...

(Troschel, 1872) ** Family Parechinidae (Mortensen, 1903b) * Family

Parasaleniidae Parasaleniidae is a family of echinoderms belonging to the order Camarodonta The Camarodonta are an Order (biology), order of globular sea urchins in the class (biology), class Echinoidea. The fossil record shows that camarodonts have been in ...

(Mortensen, 1903b) * Infraorder Temnopleuridea (Kroh & Smith, 2010) ** Family

Temnopleuridae ''Temnopleuridae'' is a family (biology), family of sea urchins in the infraorder Temnopleuridea. Genera * ''Amblypneustes'' Louis Agassiz, L. Agassiz, 1841 * ''Erbechinus'' Jeannet, 1935 * ''Holopneustes'' Louis Agassiz, L. Agassiz, 1841 * ''Me ...

(A. Agassiz, 1872) ** Family

Trigonocidaridae Trigonocidaridae is a family of echinoderms belonging to the order Camarodonta. Genera Genera: * ''Arbacina'' Pomel, 1869 * ''Asterechinus'' Mortensen, 1942 * ''Brochopleurus'' References

Camarodonta Echinoderm families {{echinoidea ...

(Mortensen, 1903b) Image:Echinus esculentus - Carantec.jpg, ''

Echinus esculentus ''Echinus esculentus'', the European edible sea urchin or common sea urchin, is a species of marine invertebrate in the Echinidae family. It is found in coastal areas of western Europe down to a depth of . It is considered "Near threatened" in th ...

'',

Echinidae Echinidae is a family of sea urchins in the order Camarodonta. Members of the family are found in the Atlantic Ocean and the Antarctic.Echinometra lucunter ''Echinometra lucunter'', the rock boring urchin, is a species of sea urchin in the family Echinometridae. It is found in very shallow parts of the western Atlantic Ocean and the Caribbean Sea. Description ''Echinometra lucunter'' has an ellip ...

'',

Strongylocentrotidae The Strongylocentrotidae are a family (biology), family of sea urchins in the order (biology), order Camarodonta. Genera References

Strongylocentrotidae, Echinoderm families {{echinoidea-stub ...

Image:Tripneustes ventricosus (West Indian Sea Egg) edit.jpg, ''

Tripneustes ventricosus ''Tripneustes ventricosus'', commonly called the West Indian sea egg or white sea urchin, is a species of sea urchin. It is common in the Caribbean Sea, the Bahamas and Florida and may be found at depths of less than . Description The Test (biol ...

'',

Image:Paracentrotus lividus profil.JPG, ''

Paracentrotus lividus ''Paracentrotus lividus'' is a species of sea urchin in the family Parechinidae commonly known as the purple sea urchin. It is the type species of the genus and occurs in the Mediterranean Sea and eastern Atlantic Ocean. Description ''Paracentr ...

'', Parechinidae Image:Parasalenia poehlii.JPG, '' Parasalenia poehlii'',

Image:Microcyphus rousseaui.jpg , '' Microcyphus rousseaui'',

Image:Asterechinus elegans - journal.pone.0053590.g003-f.png, '' Asterechinus elegans'',

Camarodonta Echinoderm families {{echinoidea ...

References

{{Taxonbar, from=Q15242268 Echinacea (animals) Echinoderm orders