?Kó͘-sè-khún
Seng-bu̍t-ha̍k hun-lūi
He̍k: Archaea
Woese, Kandler & Wheelis, 1990
Phyla / Classes

Phylum Crenarchaeota
Phylum Euryarchaeota
    Halobacteria
    Methanobacteria
    Methanococci
    Methanopyri
    Archaeoglobi
    Thermoplasmata
    Thermococci
Phylum Korarchaeota
Phylum Nanoarchaeota

Kó͘-sè-khún (古細菌; archaea) sī hiān-chhú-sî seng-bu̍t hun-lūi 3 he̍k hē-thóng (three-domain system) siāng téng chân ê 1 ê hun-lūi, lēng-goā 2 ê sī sè-khún kap chin-he̍k-seng-bu̍t. Kó͘-sè-khún ham sè-khún kāng-khoán, sī bô sè-pau-he̍k (cell nucleus) ê toaⁿ-sè-pau seng-bu̍t, sǹg sī 1 chióng goân-he̍k-seng-bu̍t (prokaryote), éng-koè "5 kài hē-thóng" ê hun-lūi kā lia̍t chò Monera. Thaû-khí-seng lia̍h-chún in kè sī ke̍k-hān-seng-bu̍t (extremophile), boé--á hoat-hiān ta̍k chióng khoân-kéng lóng ū kó͘-sè-khún tī--leh.