स्ट्रैटिग्राफिक इसके अंग्रेजी अर्थ का उदाहरण

The base of the Callovian is defined as the place in the stratigraphic column where the ammonite genus Kepplerites first appears, which is the base of the biozone of Macrocephalites herveyi.

Ammonoids of this type are the most important species from a biostratigraphical point of view.

Jurassic-Cretaceous timescale, at the website of the subcommission for stratigraphic information of the ICS.

Due to changes of the stratigraphic definitions, this section is now part of the Maastrichtian stage.

The base of the Campanian stage is defined as a place in the stratigraphic column where the extinction of crinoid species Marsupites testudinarius is located.

) The top of the Campanian stage is defined as the place in the stratigraphic column where the ammonite Pachydiscus neubergicus first appears.

Late Cretaceous timescale, at the website of the subcommission for stratigraphic information of the ICS.

The Capitanian was first used as a stratigraphic subdivision of the Guadalupian in 1961, when both names were still only used regionally in the southern US.

The base of the Capitanian stage is defined as the place in the stratigraphic record where fossils of conodont species Jinogondolella postserrata first appear.

The global reference profile for this stratigraphic boundary is located at Nipple Hill in the southern Guadalupe Mountains of Texas.

The top of the Capitanian (the base of the Wuchiapingian and Lopingian series) is defined as the place in the stratigraphic record where the conodont species Clarkina postbitteri postbitteri first appears.

Upper Paleozoic stratigraphic chart at the website of the subcommission for stratigraphic information of the ICS.

The base of the Carnian stage is defined as the place in the stratigraphic record where the ammonite species Daxatina canadensis first appears.