Category:Smoky Hill Chalk
The Smoky Hill Chalk is the upper member of the Niobrara Formation.
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Subcategories
This category has the following 5 subcategories, out of 5 total.
Media in category "Smoky Hill Chalk"
The following 4 files are in this category, out of 4 total.
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Protosphyraena fossils.jpg 4,032 × 3,024; 4.52 MB
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Styxosaurus neck.jpg 2,834 × 861; 402 KB
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Styxosaurus snowii skull.jpg 4,066 × 2,028; 1.49 MB
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Xiphactinus audax Sternberg Museum.jpg 2,560 × 1,795; 915 KB
