U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database

General Information

  • Title: Observations on the Cenomanian (Upper Cretaceous) ammonite Calycoceras (Calycoceras) obrieni Young, 1957, from Arizona and New Mexico
  • Author(s): Cobban, W.A., and Kennedy, W.J.
  • Publishing Organization: U.S. Geological Survey
  • Series and Number: Bulletin 1881-C [p. C1-C4]
  • Larger Work: Sando, W.J., ed., Shorter contributions to paleontology and stratigraphy
  • Publication Date: 1989
  • Cross Section: None
  • Find more maps in this area with mapView
  • Corrections to this entry?
* See base map disclaimer below

Map Preview

(Click image to enlarge)

Downloads from the NGMDB

Poor quality image? Let us know

Additional Resources

* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.