''Chondrocidaris'' is a
genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...
of
sea urchin
Sea urchins () are spiny, globular echinoderms in the class Echinoidea. About 950 species of sea urchin live on the seabed of every ocean and inhabit every depth zone from the intertidal seashore down to . The spherical, hard shells (tests) of ...
s of the family
Cidaridae described in 1863 by
Alexander Agassiz
Alexander Emmanuel Rodolphe Agassiz (December 17, 1835March 27, 1910), son of Louis Agassiz and stepson of Elizabeth Cabot Agassiz, was an American scientist and engineer.
Biography
Agassiz was born in Neuchâtel, Switzerland and immigrated to ...
. There are two living species and several fossil species dating as far back as the
Miocene
The Miocene ( ) is the first geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recen ...
.
[Kroh, A. (2015)]
''Chondrocidaris'' A. Agassiz, 1863
In: Kroh, A. & Mooi, R. (2015) World Echinoidea Database. Accessed through: World Register of Marine Species
The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive list of names of marine organisms.
Content
The content of the registry is edited and maintained by scientific specialist ...
on 2015-04-05.
;Living species:
*''
Chondrocidaris brevispina''
(Clark
Clark is an English language surname, ultimately derived from the Latin with historical links to England, Scotland, and Ireland ''clericus'' meaning "scribe", "secretary" or a scholar within a religious order, referring to someone who was educate ...
, 1925)
*''
Chondrocidaris gigantea''
(Agassiz
Jean Louis Rodolphe Agassiz ( ; ) FRS (For) FRSE (May 28, 1807 – December 14, 1873) was a Swiss-born American biologist and geologist who is recognized as a scholar of Earth's natural history.
Spending his early life in Switzerland, he rec ...
, 1863)
Image:Chondrocidaris brevispina.jpg, '' Chondrocidaris brevispina''
Image:Reef0228.jpg, '' Chondrocidaris gigantea''
;Extinct species:
*''
Chondrocidaris clarkii''
*''
Chondrocidaris marianica''
*''
Chondrocidaris problepteryx''
References
External links
*
Cidaridae
Cidaroida genera
{{echinoidea-stub