''Neostreptognathodus'' is an extinct genus of conodonts from the
Cisuralian (Early Permian).
Use in stratigraphy
The top of the
Artinskian
In the geologic timescale, the Artinskian is an age or stage of the Permian. It is a subdivision of the Cisuralian Epoch or Series. The Artinskian likely lasted between and million years ago (Ma) according to the most recent revision of th ...
(the base of the
Kungurian
In the geologic timescale, the Kungurian is an age or stage of the Permian. It is the latest or upper of four subdivisions of the Cisuralian Epoch or Series. The Kungurian lasted between and million years ago (Ma). It was preceded by the Ar ...
) 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
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Conodont genera
Permian conodonts
Cisuralian animals
{{conodont-stub