Sand Dollar
Abertella aberti
Paleobiology
Paleobiology
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Sea Urchin
Lovenechinus missouriensis
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Sand Dollar
Dendraster
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Sea Urchin
Arbacia crenulata
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Sea Urchin
Echinocardium marylandiense
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Sand Dollar
Clypeaster sunnilandensis
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Sand Dollar
Protoscutella mississippiensis
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Sea Urchin
Rhyncholampas evergladensis
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Heart Urchin
Schizaster armiger
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Heart Urchin
Eupatagus antillarum
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Sand Dollar
Wythella eldridgei
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Sea Urchin
Hardouinia mortonis