Sand Dollar (Clypeaster Humilis)



Sizes S (£20.00) up to L (£25.00)
Supplier Availability: Occasionally

Clypeaster humilis is a medium-sized species of sea biscuit, growing to a maximum length of 160 mm (6 in). Its shape is pentagonal and it is slightly longer than it is broad. The margin is quite thick and the petaloid area is raised above the rest of the surface. The individual petals are closed and the petaloid area occupies less than half the width of the test. The oral (under) surface is somewhat concave and the food grooves are long and deeply incised. The spines are short, with the primaries hardly exceeding the length of the secondaries. When living, this sea biscuit is greenish-grey or brownish, the petaloid area sometimes being darker brown; the bare test is yellowish or beige.

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