Biodiversity & Conservation

MarLIN Glossary

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Spicule
Variously shaped or sized calcareous or siliaceous skeletal elements used in the endoskeleton of sponges and echinoderms (Stachowitsch, 1992). May be highly variable in shape, especially in holothurian echinoderms forming anchors, anchor plates, baskets, buttons and wheels. May also be termed 'deposits' in echinoderms.

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Glossary references