A recent study shows that marine oxygen levels were crucial to the evolution of early Paleozoic trilobite body size, ...

This insight enabled him to use trilobites and other fossils to constrain the position of the continents throughout time. He has died ... rocks from the Ordovician period (between 485 and 444 ...

Learn more about a time period marked by an intense burst of ... enemies and a framework for supporting bigger body sizes. Trilobites, like this perfectly preserved specimen at South Dakota's ...

When we talk about prehistoric life, dinosaurs usually get all the attention. But the truth is, long before they came along, ...

At first, it was speculated it preyed on hard-shelled creatures like trilobites, but recent studies ... forests and swamps during the Carboniferous period. The high oxygen levels back then helped ...

With eyes like searchlights, a mouth of razor-sharp plates, and grasping appendages ready to snatch anything in reach, this ...

Here, we will look at the animals that lived on the Earth during one particular geological time: the Mesozoic Era ... During the first period of the Mesozoic Era (Triassic Period), many new ...

Earth’s history is filled with incredible milestones, and the emergence of the first animals is one of the most captivating. Scientists have long been intrigued by how and when life began on our ...

Travel back in time to the Age of Fishes with a trip to ... some of the world's largest exposed fossil beds from the Devonian period. The rock formations with the fossil beds are widespread ...