Scaphites depressus Reeside 1927a
Baculites codyensis Reeside 1927a and Phlycticrioceras trinodosus (Geinitz) 1850
<back to Early Coniacian (preventricosus zone) | Home | Chart| on to Santonian (Cretaceous)>
Late Coniacian age cephalopods are found in reddish colored sandy beds in the Mancos Shale from north of Wellington almost to Cisco. These rocks were deposited in the Sevier Foreland Basin.
References: Cobban, W. A., 1951, Scaphitoid Cephalopods of the Colorado Group, U.S.G.S. Professional Paper 239; Kennedy, W. J., and Cobban, W. A., 1991, Coniacian Ammonite Faunas from the United States Western Interior, The Palaeontological Association (London), Special Papers in Palaeontology No. 45
<back to Early Coniacian (preventricosus zone) | Home | Chart| on to Santonian (Cretaceous)>