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[dinosaur] Ammonite biozones for the Western Interior Seaway



Seeking information on the current Ammonite/Inocermus biozones for the Western Interior Seaway, especially for the mid-cretaceous / "Comanchean"  (gulf, southern , central and northern interior subprovinces)  125 - 93.5 mya.


References:

E G Kauffman, Brad Sageman, James I. Kirkland and Will Elder, 1993. "Molluscan biostratigraphy of the Cretaceous Western Interior Basin, North America" Geological Association of Canada - Special Paper39:397-434. In book: Evolution of the Western Interior Basin (pp.397-434)