This makes these brims a perfect example of what's called “parallel evolution”. Our detailed family tree showed a few other interesting features as well. It suggested that trinucleids actually belong ...

We study trilobites from four periods of the Palaeozoic: the Cambrian, Ordovician, Silurian and Devonian. Our research covers trilobite taxonomy, phylogeny, functional morphology, biogeography, and ...

A species of trilobites found in Nevada. Trilobites went extinct 250 million years ago, long before the appearance of the first dinosaurs. Disclaimer: AAAS and EurekAlert! are not responsible for ...

Trilobites went down a slightly different route, evolving compound eyes with multiple lenses. But the basic sequence of events was the same. Trilobites weren’t the only animals to stumble across ...

More information: Sarah R. Losso et al, Convergent evolution of ventral adaptations for enrolment in trilobites and extant ...

The Grand Canyon reveals new insights into Earth's Cambrian Explosion and rapid marine biodiversity evolution.