Molluscan fossils and stratigraphic descriptions from the Upper Cretaceous Mancos Shale, west-central Colorado [electronic resource] / by E.A. Merewether, D.A. Sawyer, and W.A. Cobban.
Mode of access: Internet from the USGS web site. Address as of 10/4/07: http://pubs.usgs.gov/of/2006/1326/pdf/of06-1326_508.pdf; current access via PURL.
Note
Title from PDF title screen (viewed on Dec. 20, 2006).