The stage was introduced by Russian stratigrapher Sofia Semikhatova in 1934. The Tithonian was introduced in scientific literature by German stratigrapher Albert Oppel in 1865. The Messinian was introduced by Swiss stratigrapher Karl Mayer-Eymar in 1867. The Tortonian was introduced by Swiss stratigrapher Karl Mayer-Eymar in 1858. The Bartonian stage was introduced by Swiss stratigrapher Karl Mayer-Eymar in 1857. The Piacenzian was introduced in scientific literature by Swiss stratigrapher Karl Mayer-Eymar in 1858. Her younger sister, Carlotta Maury, went on to become a geologist, stratigrapher, paleontologist. German paleontologist and stratigrapher Heinz Walter Kozur (1942-2013) described the conodont genus "Carnepigondolella".