More than 22,000 species of trilobite have been named. This is largely because the trilobite exoskeleton was made of a mineral called calcite, which fossilized very easily. However, fossils ...

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 ...

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 ...