On the relative geological ages of amber and copal

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Abstract
Radiocarbon analysis of selected amber and copal specimens yielded infinite radiocarbon ages for amber as expected, but all the copal samples proved to be recent (less than 100 years old), emphasizing the need to base the study of insect inclusions in copal on directly dated material. Some previously studied material assumed to be of Pleistocene age may need to be reassessed.

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