Late Viséan and basal Namurian goniatite faunas are described from two key localities in the province of Palencia, Cantabrian Mountains, NW Spain. The base of the Namurian is determined by Cravenoceras leion Bisat. One new genus: Revilloceras and three new species: Hypergoniatites reticulatus, Revilloceras globosum, and Dombarites cantina are described here.