A new species of Gnathodus, G. joseramoni, is defined and Gnathodus cantabricus Belka & Lehmann is revised from the study of some new conodont associations and analysis of previous data from the Cantabrian Mountains and the Pyrenees, North Iberian Peninsula. G. cantabricus is regarded as a junior synonym of Gnathodus kiensis Pazukhin from the Urals. Other occasional European findings of both taxa are indicated and stratigraphic middle Viséan to Arnsbergian ranges are established. Finally, the phylogenetic relations with other Gnathodus species are also outlined.Asturias (Comunidad Autónoma). Consejería de Educación y Cultura; PB02-079Ministerio de Ciencia y Tecnología; BTE2003-01609Ministerio de Ciencia y Tecnología; BTE2002-0381
