https://www.cambridge.org/core/journals/journal-of-paleontology/article/abs/upper-middle-devonian-givetian-gastropods-from-the-kersadiou-formation-brittany-france/E7843DBC0356D80B8450AD48D48F890E
Upper Middle Devonian (Givetian) gastropods from the Kersadiou Formation, Brittany, France |...
Upper Middle Devonian (Givetian) gastropods from the Kersadiou Formation, Brittany, France - Volume 73 Issue 6
middle devonianfrom thekersadiou formationuppergivetian