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Title:
Sand Dollar Shells

Reference Number:
S-029

Uncompressed digital file size:
11 MB

Credit:
D.Roberts
Caption:
Sand dollars are flat, round marine animals related to sea urchins, sea stars, and other echinoderms. The most common sand dollar, Echinarachnius parma, is widespread in circumpolar ocean waters of the Northern Hemisphere. A sand dollar has a rigid skeleton known as a test. Like sea urchins, sand dollars have five paired rows of pores. In sand dollars they are arranged in a petal-like pattern.
 
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