Two new species of Ripidomellidae of the Chergakian supra-horizon of Tuva
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Abstract
Of all the organic remains found in the sediments of the Chergakian suprahorizon, brachiopod remains are the most numerous. Nuclei, shell impressions, scattered flaps are found throughout the whole section of the Chergak series (from its base to the roof) and in a wide variety of rocks (from coarse-grained sandstones to shale and massive limestones). Finds of whole brachiopod shells are much rarer, but in some places they form massive assemblages. The brachiopod complex is represented almost exclusively by endemic forms ...
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References
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