TY  - BOOK
AU  - Shimer HW
TI  - Index fossils of North America
U1  - 560.97 
PY  - 1959///
CY  - London
PB  - Chapman & Hall
KW  - Fossils
KW  - North America
KW  - Paleontology
N1  - New York based on the complete revision and reillustration of grabau & Shimer's North American index fossils
ER  -