Kobayashi 1961. The Cambro-Ordovician Formations and Faunas of South Korea Part VIII Palaeontology VII Cambrian Faunas of the Mun'gyong (Bunkei) District and the Samposan Formation of the Jongwol (Neietsu) District. Journal of the Faculty of Science Tokyo University (2), 13(2) 1961: 181-241