Interesting Engineering on MSN4 个月
320-million-year-old fossil site found in US unveils early Pennsylvanian secrets
The site reveals a diverse ecosystem of early land-dwelling animals and plants from a poorly understood ... million years ago ...
National Geographic news3 个月
Carboniferous Period
This time period took place 359 to 299 million years ... (359.2 million to 318.1 million years ago) and the later Pennsylvanian (318.1 million to 299 million years ago). During the Mississipian ...