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Discovery of Devonian to Carboniferous Radiolarians from Central Thailand

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Abstract

A Late Devonian to Early Carboniferous radiolarian fauna is present in siliceous shale from the Ban Rai area, Uthai Thani province, central Thailand. The radiolarian fauna is composed of Trilonche palimbola, T elegans, Trilonche sp. cf T echinata, T davidi, T vetusta, Spongentactinia carynacantha, Stigmosphaerastylus variospina, Astraentactinia stellata, Astraentactinia mirausi, Archocyrtium sp., Albaillella paradoxa gr. and other species and corresponds to Late Devonian (Frasnian) to Early Carboniferous (Tournaisian) radiolarian fauna  reported from northern and southern Thailand, Laos, eastern Australia, Texas, Germany, South China and France. Fourteen radiolarian species belonging to seven genera are investigated. The radiolarian-baring rocks seem to have been accumulated around the continental slope on the passive continental margin of the Sibumasu terrane within the Paleo-Tethys ocean during Late Devonian to Early Carboniferous time.

 

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