Abstract
Fifteen species of undissepimented solitary horn corals (Coelenterata, Rugosa) from the Lower DevonianAbadía Formation of the Cantabrian Mountains in Northern Spain are described belonging to the genera Enterolasma, Schindewolfia, Boolelasma, Syringaxon, Nicholsoniella, Adradosia, Ufimia, Oligophyllum (Pentelasma) and Pentaphyllum. Three species are new: Syringaxon smithioides nov. sp., Ufimia tabulata nov. sp., and another unnamed new species of Ufimia; Adradosia barroisi simplex Plusquellec, 1981 has been renamed as A. b. plusquelleci nov. nom. because of homonymy. The new Cantabrian coral fauna represents the most diverse Cyathaxonia fauna sensu Hill of Lower Devonian age; dissepimented corals are almost completely missing. Several elements are related to species in Germany (Harz Mts. and Thuringia), Bohemia, Turkey and the Urals. Some coral-bearing horizons contain ammonoids, mostly Erbenoceras filalense and several species of Mimagoniatites indicating a late Lower Emsian age.
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