Location: The dam and spillway are about an hour north of Dallas, just above Denison, TX. From the parking area by the dam, walk west along the lake shore.
What you can find: In the soft marl layers, look for shark's teeth, oysters, and other shelled fossils. In the white limestone, you will find quite large ammonites.
Locality Type: Lakeshore
Equipment Needed: Rock pick
Additional Information: Cretaceous era, Duck Creek formation.
A Field Guide to Fossils of Texas
Roadside Geology of Texas
Gem Trails of Texas