File:Biostratigraphic chart of the Upper Cretaceous (Campanian and Maastrichtian) of the Western Interior of North America.png

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Biostratigraphic_chart_of_the_Upper_Cretaceous_(Campanian_and_Maastrichtian)_of_the_Western_Interior_of_North_America.png ‎(591 × 430 pixels, file size: 53 KB, MIME type: image/png)

Summary[edit | edit source]

Description

Biostratigraphic chart of the Upper Cretaceous (Campanian and Maastrichtian) of the Western Interior of North America showing ammonite and inoceramid zones.

Source

The image appears on a website entitled, "DESCRIPTION OF TWO SPECIES OF HOPLOSCAPHITES (AMMONOIDEA: ANCYLOCERATINA) FROM THE UPPER CRETACEOUS (LOWER MAASTRICHTIAN) OF THE U.S. WESTERN INTERIOR" at http://digitallibrary.amnh.org/bitstream/handle/2246/6926/B427.pdf?isAllowed=y&sequence=1.

Date

22 February 2019

Author

Neil H. Landman, W. James Kennedy, Neal L. Larson, Joyce C. Grier, James W. Grier, and Tom Linn

Rationale

No free licensed or public domain alternatives known to exist to show a biostratigraphic chart of the Upper Cretaceous (Campanian and Maastrichtian) of the Western Interior of North America showing ammonite and inoceramid zones.

Permission

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current18:39, 12 August 2021Thumbnail for version as of 18:39, 12 August 2021591 × 430 (53 KB)Marshallsumter (discuss | contribs){{Information1 |Description = Biostratigraphic chart of the Upper Cretaceous (Campanian and Maastrichtian) of the Western Interior of North America showing ammonite and inoceramid zones. |Source = The image appears on a website entitled, "DESCRIPTION OF TWO SPECIES OF HOPLOSCAPHITES (AMMONOIDEA: ANCYLOCERATINA) FROM THE UPPER CRETACEOUS (LOWER MAASTRICHTIAN) OF THE U.S. WESTERN INTERIOR" at http://digitallibrary.amnh.org/bitstream/handle/2246/6926/B427.pdf?isAllowed=y&sequence=1. |Date = 22 F...

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