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 ...

Abrupt climate change at the end of the Ordovician Period (~450-440 million years ago) caused the second largest mass extinction in Earth history, including the demise of the trilobite ...