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单词 Clypeasteroida
释义

Clypeasteroida

中文百科

沙钱 Sand dollar

(重定向自Clypeasteroida)
从反口面观看的沙钱硬壳
从腹面观看的沙钱硬壳

沙钱,或译「海钱」,是海胆纲分类下的其中一个目,其正式学名是楯形目(Clypeasteroida)。沙钱生活在潮间带或潮下带的沙滩表面或埋在沙内,甚至分布至水深3000米的海床。由于其栖息处及外形多呈圆盘状,彷如一个银币,因而得名。

英语百科

Sand dollar 沙钱

(重定向自Clypeasteroida)
Leodia sexiesperforata by Louis Agassiz (1841).
Examples of Rotulidae.
Encope emarginata (aboral and oral faces) dby Ernst Haeckel (1904).

The term sand dollar (or sea cookie or snapper biscuit in New Zealand, or pansy shell in South Africa) refers to species of extremely flattened, burrowing sea urchins belonging to the order Clypeasteroida. Some species within the order, not quite as flat, are known as sea biscuits. Related animals include other sea urchins, sea cucumbers, and starfish.

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更新时间:2025/6/20 6:10:34