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 ...
The ancient fish lived about 305 million years ago during the Late Pennsylvanian period of the Paleozoic Era, the New Mexico Department of Cultural Affairs said in a Jan. 10 news release.