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

Fig.1: Tempo and mode in the body size evolution of Cambrian-Ordovician trilobites. Changes in maximum size (red) and mean size (blue) for each time slice, with lines and shading representing the ...

But Mosura was different. Instead of the familiar streamlined body with flaps and claws, this little predator had something ...

I made a mistake with the age in the video. These trilobites are actually from the Cambrian period, not the Devonian. So, these fossils are around 485-541 million years old! These are by far the ...

Helmetia expansa was found to have walking legs and molting behavior, changing assumptions about its mobility and growth. For ...

Photograph by James L. Amos The iconic arthropods of the Cambrian were the trilobites, which left a huge number of fossils. Trilobites had flattened, segmented, plated bodies that helped to ...

Deep in the frozen wilderness of Antarctica lies a 'pyramid' that has baffled both scientists and conspiracy theorists alike.

Anomalocaris was one of the first predators in the Cambrian seas ... it was speculated it preyed on hard-shelled creatures like trilobites, but recent studies suggest it likely hunted faster ...