The fossil site, called Lantern North, dates to approximately 320-318 million years ago during the early Pennsylvanian period and is located in the Wamsutta Formation of eastern North America.

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.

Now, an international team has discovered an entire ecosystem preserved in sedimentary stone from the Early Pennsylvanian (a period from around 320 to 318 million years ago), containing more than ...

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 ...