@article{paperid:1067155, author = {Wolfgang Kiessling and Martin Schobben and Ghaderi, Abbas and Vachik Hairapetian and Lucyna Leda and Dieter Korn}, title = {Preā€“mass extinction decline of latest Permian ammonoids}, journal = {Geology}, year = {2018}, volume = {46}, number = {3}, month = {March}, issn = {0091-7613}, pages = {283--286}, numpages = {3}, keywords = {extinction; Permian; ammonoids; Iran; Julfa; Abadeh}, }