Evolution
The ancestors of the sand dollars diverged from the other irregular echinoids, namely the cassiduloids, during the early Jurassic, with the first true sand dollar genus, Togocyamus, arising during the Paleocene. Soon after Togocyamus, more modern-looking groups emerged during the Eocene.
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—Mario Puzo (b. 1920)
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—Thomas Henry Huxley (182595)
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