''Cidaris'' is a genus of pencil sea urchins.

Species

According to the World Register of Marine Species (WoRMS), the genus Cidaris contains the following extant species *'' Cidaris abyssicola'' ( Agassiz, 1869) *'' Cidaris annulata'' (

Gray Grey (more common in British English) or gray (more common in American English) is an intermediate color between black and white. It is a neutral or achromatic color, meaning literally that it is "without color", because it can be composed o ...

, 1855) *'' Cidaris baculosa'' (

Lamarck Jean-Baptiste Pierre Antoine de Monet, chevalier de Lamarck (1 August 1744 – 18 December 1829), often known simply as Lamarck (; ), was a French naturalist, biologist, academic, and soldier. He was an early proponent of the idea that biolo ...

, 1816) *'' Cidaris blakei'' ( Agassiz 1878) *'' Cidaris cidaris'' (

Linnaeus Carl Linnaeus (; 23 May 1707 – 10 January 1778), also known after his ennoblement in 1761 as Carl von Linné Blunt (2004), p. 171. (), was a Swedish botanist, zoologist, taxonomist, and physician who formalised binomial nomenclature, the ...

, 1758) *'' Cidaris mabahissae'' ( Mortensen, 1939) *'' Cidaris nuda'' ( Mortensen, 1903) *'' Cidaris rugosa'' ( Clark, 1907) *'' Cidaris thouarsii'' ( Agassiz & Desor, 1846)

Extinct species or names brought to synonymy

* †''Cidaris aculeata'' * †''Cidaris aialensis'' * †''Cidaris alpina'' * †''Cidaris alternata'' * †''Cidaris austriaca'' * †''Cidaris avena'' * †''Cidaris biconica'' * †''Cidaris biformis'' * †''Cidaris braunii'' * †''Cidaris buchii'' * †''Cidaris caudex'' * †''Cidaris cingulata'' * †''Cidaris coralliophila'' * †''Cidaris costalarensis'' * †''Cidaris costata'' * †''Cidaris costeanensis'' * †''Cidaris decorata'' * †''Cidaris decoratissima'' * †''Cidaris dorsata'' * †''Cidaris ecki'' * †'' Cidaris elegans'' Munster, 1826irmng.org
/ref> * †''Cidaris elegans'' Agassiz, 1879, synonym for '' Histocidaris elegans'' * †''Cidaris forminensis'' * †''Cidaris fustis'' * †''Cidaris glabra'' * †''Cidaris hausmanni'' * †''Cidaris lanceata'' * †''Cidaris linearis'' * †''Cidaris milierensis'' * †''Cidaris ovata'' * †''Cidaris perplexa'' * †''Cidaris petersii'' * †''Cidaris plana'' * †''Cidaris pyramidalis'' * †''Cidaris quadrialata'' * †''Cidaris quadriserrata'' * †''Cidaris regnyi'' * †''Cidaris remifera'' * †''Cidaris remifera'' * †''Cidaris reticulata'' * †''Cidaris schwageri'' * †''Cidaris scrobiculata'' * †''Cidaris seelandica'' * †''Cidaris semicostata'' * †''Cidaris similis'' * †''Cidaris spinachristi'' * †''Cidaris spongiosa'' * †''Cidaris stipes'' * †''Cidaris stoppanii'' * †''Cidaris sulcata'' * †''Cidaris tenuicostata'' * †''Cidaris tetraedrica'' * †''Cidaris transversa'' * †''Cidaris trapezoidalis'' * †''Cidaris trigona'' * †''Cidaris triserrata'' * †''Cidaris undulatus'' * †''Cidaris valparolae'' * †''Cidaris verticillata'' * †''Cidaris verticillata'' * †''Cidaris waechteri'' * †''Cidaris wissmanni'' * †''Cidaris zardini'' ''Cidaris''
at Fossilworks.org

References

Cidaridae Cidaroida genera Extant Triassic first appearances {{echinoidea-stub