A-C. Geography, geologic setting, and stratigraphy of the Florissant Formation A. Map showing the geographical position of the Florissant Fos sil Beds National Monument in Colorado, USA. B. Geological map indicating Florissant Formation and surrounding formations. X1 = sample UF15880–7285 locality, X2 = sample S151454 locality. Map based upon and modified after U.S.G.S. Map 1-1044 (Wobus and Epis, 1978). C. Generalized stratigraphy of the Florissant Formation, modified after Evanoff (2001).