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Article
Published: 2022-04-20

Fossil caddis cases from the lower Eocene Huachong Formation of the Sanshui Basin, Foshan City, Guangdong Province, South China with detrital zircon analyses

State Key Laboratory of Palaeobiology and Stratigraphy, Center for Excellence in Life and Paleoenvironment, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, China
State Key Laboratory of Palaeobiology and Stratigraphy, Center for Excellence in Life and Paleoenvironment, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, China
State Key Laboratory of Palaeobiology and Stratigraphy, Center for Excellence in Life and Paleoenvironment, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, China
State Key Laboratory of Palaeobiology and Stratigraphy, Center for Excellence in Life and Paleoenvironment, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, China
Trichoptera Paleogene Eocene zircon U-Pb dating

Abstract

Here we describe for the first time the insect (trace) fossils from the lower Eocene Huachong Formation at the Sanshui Basin in Foshan City, Guangdong Province, South China. Three specimens of caddis cases display different morphologies, but all of them are constructed using mainly ostracods. The detrital zircon from a layer below the fossil bed is studied. Our isotopic chronological analyses of the detrital zircons reveal at least four phases of volcanic activities in this area during the Phanerozoic.

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