A History of Agriculture in India v1.c48.64
A History of Agriculture in India v1.c48.64
- Language
- English
v1.c48.64
PERMIAN PERIOD, last period of the Palaeozoic Era which began about 280 000 000 years ago and lasted about 55 000 000 years ago. While several varieties of life became extinct, the reptiles developed rapidly, and there was a radical change in vegetation.