LOCKLEY & SCHUMACHER, 2014
Locality: John Martin Reservoir, Bent County, Colorado
Horizon: "Dakota" Group.
Biostratigraphy:
Age: Albian Stage, Middle Gallic Subepoch, Late Early Cretaceous Epoch-Cenomanian Stage, late Middle Gallic Subepoch, Ealry Gulf Epoch, Middle Cretaceous.
Material:
CU 204.11: Swim tracks.
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LOCKLEY, SIMMONS & DAGGET, 2014
Locality: Golden Area, Northern end of the Dinosaur Ridge hogback, about 1 mile (1.6 km) south of the Lena Gulch, Jefferson County, Colorado.
Horizon: "Dakota" Group.
Biostratigraphy:
Age: Early Cretaceous.
Material:
In situ: Pes swim tracks.
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