स्ट्रैटिग्राफर इसके अंग्रेजी अर्थ का उदाहरण

The Tortonian was introduced by Swiss stratigrapher Karl Mayer-Eymar in 1858.

A key change happens towards the end from Nicolai Ivanovich Andrusov (Николай Иванович Андрусов, Nikolay Ivanovich Andrusov) (19 December 1861 – 27 April 1924) was a Russian Empire born geologist, stratigrapher, and palaeontologist.

Sometimes local rock strata cannot be correlated in sufficient detail with the ICS timescale, and stratigraphers often use regional timescales as alternatives to the ICS timescale.

The separation between the group and the stage was made in the second half of the 20th century, when stratigraphers saw the need to distinguish between lithostratigraphic and chronostratigraphic names.

The base of the interval is the same but the top was defined by British stratigraphers as the base of the Portlandian (sensu anglico) whereas in France the top was defined as the base of the Tithonian (sensu gallico).

The Olenekian stage was introduced into scientific literature by Russian stratigraphers in 1956.

The Induan stage was introduced into scientific literature by Russian stratigraphers in 1956, who divided the Scythian stage that was used by Western stratigraphers into the Induan and Olenekian stages.

The Serpukhovian stage was proposed in 1890 by Russian stratigrapher Sergei Nikitin and was introduced in the official stratigraphy of European Russia in 1974.