permian period (English)
Contributed by: Webmaster-II on 2017-09-20
Ref: বিজ্ঞানকোষ প্ৰথহম খণ্ড
1. Geology(Abstract Noun) a geologic period and system which spans 46.7 million years from the end of the carboniferous period 298.9 million ago. It is the last period of the paleozoic era পৃথিৱীৰ ইতিহাসৰ পেলিওজোয়িক মহাযুগৰ শেষৰ ভাগ