National Geologic Map Database
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Title: Observations on the Cenomanian (Upper Cretaceous) ammonite Calycoceras (Calycoceras) obrieni Young, 1957, from Arizona and New Mexico
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Author(s): Cobban, W.A., and Kennedy, W.J.
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Publishing Organization: U.S. Geological Survey
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Series and Number: Bulletin 1881-C [p. C1-C4]
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Larger Work: Sando, W.J., ed., Shorter contributions to paleontology and stratigraphy
- Publication Date: 1989
- Cross Section: None
- North Latitude: 36° 59' 57" N (36.9992)
- South Latitude: 33° 12' 4" N (33.2011)
- East Longitude: 107° 42' 40" W (-107.7111)
- West Longitude: 110° 0' 2" W (-110.0006)
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* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.