3 min read During the Ordovician period, part of the Paleozoic era, a rich variety of marine ... are more closely related to spiders and scorpions. A few species of these "living fossils" still ...

A “demon-toothed” sea creature with “large, well-spaced fangs” has been identified as a new species after a researcher found a fossilized partial skull in the New Mexico desert, officials said. The ...

3 min read The Carboniferous period, part of the late Paleozoic era, takes its name from large ... There were predatory species that resembled modern-day crocodiles. Armed with vicious teeth ...

The ancient fish lived about 305 million years ago during the Late Pennsylvanian period of the Paleozoic Era, the New Mexico ... the fish “as a new genus and species,” according to officials.

But even though the earliest traces of starfish stretch all the way back to the Paleozoic era, they're not a sea ... are at ...