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Trogkofel Formation
The Trogkofel Formation is a geologic formation in Austria, Slovenia and Italy. It preserves fossils dating back to the Sakmarian to Artinskian stages of the Permian period.Trogkofel Formation at .org Fossil content The following fossils were reported from the formation: * '' Alternifenestella subquadratopora'' * '' Alternifenestella tuberculifera'' * ''[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Formation (stratigraphy)
A geological formation, or simply formation, is a body of rock having a consistent set of physical characteristics (lithology) that distinguishes it from adjacent bodies of rock, and which occupies a particular position in the layers of rock exposed in a geographical region (the stratigraphic column). It is the fundamental unit of lithostratigraphy, the study of strata or rock layers. A formation must be large enough that it can be mapped at the surface or traced in the subsurface. Formations are otherwise not defined by the thickness of their rock strata, which can vary widely. They are usually, but not universally, tabular in form. They may consist of a single lithology (rock type), or of alternating beds of two or more lithologies, or even a heterogeneous mixture of lithologies, so long as this distinguishes them from adjacent bodies of rock. The concept of a geologic formation goes back to the beginnings of modern scientific geology. The term was used by Abraham Gottlob W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neostreptognathodus Cf
''Neostreptognathodus'' is an extinct genus of conodonts from the Cisuralian The Cisuralian is the first Series (stratigraphy), series/Epoch (geology), epoch of the Permian. The Cisuralian was preceded by the Pennsylvanian (geology), Pennsylvanian and followed by the Guadalupian. The Cisuralian Epoch is named after the w ... (Early Permian). Use in stratigraphy The top of the Artinskian (the base of the Kungurian) stage is defined as the place in the stratigraphic record where fossils of conodont species ''Neostreptognathodus pnevi'' and ''Neostreptognathodus exculptus'' first appear. ''Neostreptognathodus costatus'' is from the Early Permian Amushan Formation in Xiwuzhumuqin Qi, Inner Mongolia, in China. References External links * * Conodont genera Permian conodonts Cisuralian animals {{conodont-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
