The Dinwoody Formation is a geologic formation in the western United States (Idaho, Montana, Utah, Wyoming). It preserves fossils dating back to the Triassic period (Induan stage).
Fossil content
Molluscs
Cephalopods Cephalopods of the Dinwoody Formation Genus Species Location Stratigraphic position Material Notes Images Xiaohenautilus X. chatelaini A grypoceratid trigonoceratoid
See also
List of fossiliferous stratigraphic units in Montana Paleontology in Montana
References