Abstract
The Mera site is the only fossil pollen and forest bed radiocarbon dated 33-26 ka BP in tropical lowland Amazonia. Here I conclude, from the study of the geology, geomorphology and paleopedology of the Mera site area, as well as from new 14C and U Th age determination of the organic layers, that the pollen sections are not of last glacial age but of Middle Pleistocene age, at least. No evidence of last glacial age has been found for the Mera fossil forest beds. The data from the Mera sites, therefore, should neither be used for climate reconstructions of the last glacial maximum, nor for disputing the refugial theories.
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