TY  - BOOK
AU  - Coban,William Aubrey
TI  - Ammonites and some characteristic bivalves from the Upper Cretaceous Frontier Formation, Natrona County, Wyoming
U1  - 564.530978793 
PY  - 1990///
CY  - Washington, D.C.
PB  - United States Geological Survey
KW  - Ammonoidea
KW  - Wyoming
KW  - Natrona County
KW  - Bivalves, Fossil
KW  - Paleontology
KW  - Cretaceous
KW  - Frontier Formation
ER  -