Fig. 41 in Late Campanian (Cretaceous) Heteromorph Ammonites From The Western Interior Of The United States

Fig. 41. Index map of part of the Western Interior of the United States showing localities of Exiteloceras jenneyi (Whitfield, 1877). An x may represent one or several nearby localities. Numbers refer to USGS Mesozoic localities mentioned in the text. Dashed line marks the approximate western shoreline of the Western Interior Seaway during E. jenneyi zone time.