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 ...

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 ...