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Letters to Nature
Nature 239, 228 - 231 (22 September 1972); doi:10.1038/239228b0

The First Fossil Record of Caecilian Amphibians

RICHARD ESTES* & MARVALEE H. WAKE

*Department of Biology, Boston University, Boston, Massachusetts 02215
Department of Instruction in Biology, University of California, Berkeley, California 94720

THREE groups of amphibians are living today—frogs, salamanders and caecilians. The fossil record of frogs and salamanders is relatively poor1,2, but representatives of most groups have been discovered. For the caecilians, however, no authentic fossils have been recognized, until now. We describe here a single diagnostic vertebra from the Palaeocene of Brazil.

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