The Pennsylvanian Period is when it all went to shit. Not that the Mississippi Period was any better, with its oceans full of giant predatory mops.
Geological_time_spiral.png (6 Mb)
The Pennsylvanian Period is when it all went to shit. Not that the Mississippi Period was any better, with its oceans full of giant predatory mops.
Geological_time_spiral.png (6 Mb)
