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I first thought of Wiwaxia. But, it could not be. Although Wiwaxia and this animal are approximately the same size, the former lived nearly 500 million years ago and paleontologists have not yet been able to determine whether it was an Annelid or a Mollusc. This animal is surely an Arthropod, the caterpillar of Acronicta americana, the American Dagger Moth.

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