Kó͘-seng-tāi sī chi̍t toāⁿ tē-chit sî-tāi, sî-kan sī 542 Ma (pah-bān nî chêng) kàu 251 Ma chó-iū. Chit tāi ē-kha koh hun 6 toāⁿ, tùi thâu khai-sí sī Cambria-kì, Ordovices-kì, Silur-kì, Devon-kì, Carbo-kì, Perm-kì.

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