FIG. 1. Map of the middle Campanian Baculites scotti Zone showing the shoreline along the western margin of the Western Interior Seaway (reproduced from Cobban et al., 1994). The numbered dots indicate USGS and AMNH localities cited in the text, as listed in the appendix.Published as part of Landman, Neil H., Kennedy, W. James, Cobban, William A., Larson, Neal L. & Jorgensen, Steven D., 2013, A new species of Hoploscaphites (Ammonoidea: Ancyloceratina) from cold methane seeps in the Upper Cretaceous of the U.S. Western Interior, pp. 1-40 in American Museum Novitates 2013 (3781) on page 3, DOI: 10.1206/3781.2, http://zenodo.org/record/536464
Fig. 62. Didymoceras nebrascense (Meek and Hayden, 1856a) and Solenoceras bearpawense, n. sp. BHMNH ...
Fig. 31. Part of the external suture of Didymoceras cheyennense (Meek and Hayden, 1856a). E is the e...
72 pages : illustrations (some color), map ; 26 cm.Two species of scaphitid ammonites (Ammonoidea: A...
FIG. 4. Size-frequency histogram of Hoploscaphites gilberti, n. sp., Pierre Shale, Baculites scotti–...
FIG. 12. Sutures of Hoploscaphites gilberti, n. sp., and H. gilli Cobban and Jeletzky, 1965. A. H. g...
Landman, Neil H., Kennedy, W. James, Cobban, William A., Larson, Neal L., Jorgensen, Steven D. (2013...
FIG. 2. Tepee buttes in the Pierre Shale of Colorado, Wyoming, and South Dakota. A. Tepee butte alon...
Landman, Neil H., Kennedy, W. James, Larson, Neal L., Grier, Joyce C., Grier, James W., Linn, Tom (2...
Fig. 27. A, B. Two views of the holotype of Ancyloceras? cheyenensis (sic) Meek and Hayden,Published...
Fig. 19. A C. Nostoceras monotuberculatum Kennedy and Cobban, 1993a. A, B. USNM 482470, USGS Mesozoi...
Fig. 28. Side view and cross section of the holotype of Ancyloceras (Hamites) uncus Meek and Hayden,...
Fig. 35. Didymoceras cheyennense (Meek and Hayden, 1856a). A. USNM 482465, USGS Mesozoic locality D1...
Fig. 38. Didymoceras cheyennense (Meek and Hayden, 1856a). A, B. USNM 482462, USGS Mesozoic locality...
Fig. 13. A, B. Didymoceras nebrascense (Meek and Hayden, 1856a). USNM 482434, USGS Mesozoic locality...
Fig. 33. Didymoceras cheyennense (Meek and Hayden, 1856a). A. USNM 482463, USGS Mesozoic locality D1...
Fig. 62. Didymoceras nebrascense (Meek and Hayden, 1856a) and Solenoceras bearpawense, n. sp. BHMNH ...
Fig. 31. Part of the external suture of Didymoceras cheyennense (Meek and Hayden, 1856a). E is the e...
72 pages : illustrations (some color), map ; 26 cm.Two species of scaphitid ammonites (Ammonoidea: A...
FIG. 4. Size-frequency histogram of Hoploscaphites gilberti, n. sp., Pierre Shale, Baculites scotti–...
FIG. 12. Sutures of Hoploscaphites gilberti, n. sp., and H. gilli Cobban and Jeletzky, 1965. A. H. g...
Landman, Neil H., Kennedy, W. James, Cobban, William A., Larson, Neal L., Jorgensen, Steven D. (2013...
FIG. 2. Tepee buttes in the Pierre Shale of Colorado, Wyoming, and South Dakota. A. Tepee butte alon...
Landman, Neil H., Kennedy, W. James, Larson, Neal L., Grier, Joyce C., Grier, James W., Linn, Tom (2...
Fig. 27. A, B. Two views of the holotype of Ancyloceras? cheyenensis (sic) Meek and Hayden,Published...
Fig. 19. A C. Nostoceras monotuberculatum Kennedy and Cobban, 1993a. A, B. USNM 482470, USGS Mesozoi...
Fig. 28. Side view and cross section of the holotype of Ancyloceras (Hamites) uncus Meek and Hayden,...
Fig. 35. Didymoceras cheyennense (Meek and Hayden, 1856a). A. USNM 482465, USGS Mesozoic locality D1...
Fig. 38. Didymoceras cheyennense (Meek and Hayden, 1856a). A, B. USNM 482462, USGS Mesozoic locality...
Fig. 13. A, B. Didymoceras nebrascense (Meek and Hayden, 1856a). USNM 482434, USGS Mesozoic locality...
Fig. 33. Didymoceras cheyennense (Meek and Hayden, 1856a). A. USNM 482463, USGS Mesozoic locality D1...
Fig. 62. Didymoceras nebrascense (Meek and Hayden, 1856a) and Solenoceras bearpawense, n. sp. BHMNH ...
Fig. 31. Part of the external suture of Didymoceras cheyennense (Meek and Hayden, 1856a). E is the e...
72 pages : illustrations (some color), map ; 26 cm.Two species of scaphitid ammonites (Ammonoidea: A...