Kingdom Animalia Class Echinoidea Family Echinidae | Phylum Echinodermata Order Echinoida Rank Genus | |
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Similar Gracilechinus acutus, Echinidae, Echinus melo, Echinus, Histocidaris | ||
Gracilechinus is a genus of sea urchins in the family Echinidae.
Contents
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 the fact that they bear a primary turbercle on every interambulacral plates.
Most species in this genus are abyssal, and live in the North Atlantic or close cold seas.
Species
Species in this genus include:
References
Gracilechinus Wikipedia(Text) CC BY-SA