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Proceedings of the National Academy of Sciences of the United States of America logoLink to Proceedings of the National Academy of Sciences of the United States of America
. 1926 Aug;12(8):519–522. doi: 10.1073/pnas.12.8.519

The Stratigraphic Horizon of the Beds Containing Lepidocyclina Chaperi on Haut Chagres, Panama

Thomas Wayland Vaughan 1
PMCID: PMC1084658  PMID: 16587121

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