Keywords: Graptolites, graptolite, pterobranch, pterobranchs, Pterobranchia, Dithecoidea, Inocaulida, Scyphozoa, Byronia, Pogonophora, Hydrozoa, scyphoplyps, Tuboidea, Stolonoidea, chitin, Chaunograptus, Chaunograptidae, microfossils, organic
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2024年12月23日