@article{mon_2003.398, title = {Cenomanian (early Late Cretaceous) ammonoid faunas of Western Europe. Part II: diversity patterns and the end-Cenomanian anoxic event}, author = {Monnet, Claude and Bucher, Hugo and Escarguel, Gilles and Guex, Jean }, year = {2003}, journal = {Eclogae geologicae Helvetiae (Birkhäuser) Basel}, volume = {96}, pages = {381–398}, url = {https://doi.org/10.5169/seals-169028}, doi = {10.5169/seals-169028} }@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} }