TY  - BOOK
AU  - Swinnerton,H H
TI  - The new naturalist fossils
U1  - 560 SWI  
PY  - 1960///.
CY  - London : 
PB  - Collins, 
KW  - Fossils-History
KW  - Paleontology
N1  - Includes index; contents:pt.1.Preliminary considerations-pt.2.An era of beginnings-pt.3.An era of transitions-pt.4.An era of culminations
ER  -