Gracilechinus

<i>Gracilechinus</i>

Gracilechinus

Genus of sea urchins

Gracilechinus is a genus of sea urchins in the family Echinidae.

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Description and characteristics

The species in this genus are regular sea urchins, with a rounded test, bearing the anus at the top and the mouth at the bottom. They are extremely similar to species in the genus Echinus, but are differentiated by a primary tubercle on every interambulacral plate.[1]

Most species in this genus are abyssal, and live in the North Atlantic or close cold seas.

Species

Species in this genus include:[2]

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Test of a Gracilechinus acutus

References

  1. [1]
    "Gracilechinus". Echinoid Directory.
  2. [2]
    Andreas Kroh (2015), Gracilechinus in Kroh, A. & Mooi, R. (2015), World Echinoidea Database.
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