Complex archaea that bridge the gap between prokaryotes and eukaryotes.
Nature
Spang, Anja A; Saw, Jimmy H JH; Jørgensen, Steffen L SL; Zaremba-Niedzwiedzka, Katarzyna K; Martijn, Joran J; Lind, Anders E AE; van Eijk, Roel R; Schleper, Christa C; Guy, Lionel L; Ettema, Thijs J G TJG