National Geologic Map Database
Product Description Page
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Title: Late Cretaceous fossil zones of the Powder River basin, Wyoming and Montana
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Author(s): Cobban, W.A.
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Publishing Organization: Wyoming Geological Association
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Series and Number: Field Conference Guidebook no. 13 [p. 114-119]
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Larger Work: Bibb, T.W., Jr., chairman, Powder River basin
- Publication Date: 1958
- Map Scale: 1:2,070,588
- Cross Section: Yes
- North Latitude: 46° 0' 0" N (46.0000)
- South Latitude: 42° 39' 40" N (42.6612)
- East Longitude: 104° 0' 0" W (-104.0000)
- West Longitude: 108° 0' 0" W (-108.0000)
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* See base map disclaimer below.
* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.