@article{mon_2002.399, title = {Cenomanian (early Late Cretaceous) ammonoid faunas of western Europe. Part I: biochronology (unitary associations) and diachronism of datums}, author = {Monnet, Claude and Bucher, Hugo }, year = {2002}, journal = {Eclogae geologicae Helvetiae (Birkhäuser) Basel}, volume = {95}, pages = {57–73}, url = {https://doi.org/10.5169/seals-168946}, doi = {10.5169/seals-168946} }