Newly discovered radiolaria and fusulinids of late Carboniferous–earliest Permian age document ages for off-scraped pelagic sequences within the Chilean parts of the Gondwanaland forearc. Well-preserved radiolarians are illustrated and compared with the only other known correlatives from Japan. These findings provide new insight for paleoenvironments of oceanic assemblages within the forearc as well as new constraints for its temporal development.
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