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7 Cards in this Set
- Front
- Back
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Echinoderms
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Are deuterostomes.
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Class Asteroidea
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Sea stars, have arms radiating from a central disk.
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Class Ophiuroidea
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Brittle stars, long flexible arms.
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Class Echinoidea
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Sea urchins and sand dollars, have no arms but have five rows of tube feet.
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Class Crinoidea
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Sea lilies and feather stars
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Class Holothuroidea
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Sea cucumbers, do not look like other echinoderms.
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Class Concentricycloidea
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Sea daisies, only two known species.
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