A routine fossil-hunting trip turned into a groundbreaking discovery for a pair of researchers when they stumbled upon a rare ...

3 min read During the Ordovician period, part of the Paleozoic era, a rich variety of marine ... seabed as gas-filled chambers in their conical shells made them buoyant. They were accomplished ...

The names Paleozoic, Mesozoic, and Cenozoic all describe the types of fossils that have been found relating to those periods. In the Mesozoic Era ... being able to grow shells and killing them ...

3 min read The Cambrian period, part of the Paleozoic era, produced the most intense ... These included brachiopods, which lived in shells resembling those of clams or cockles, and animals with ...

The beginning and end of each chunk of time in the geologic time scale is determined by when some species appeared or disappeared from the fossil record ... extinction events define a change in era.

Stromatoporoid sponges were key reef builders during the Paleozoic era, playing a crucial role ... not only extends the fossil record of stromatoporoid reefs by about 20 million years but also ...

It significantly shaped the two periods of time that made up the end of the Paleozoic era. First ... We did this by looking at the fossilized shells of ancient clam-like creatures known as ...