Department of Earth Sciences, University of Southern California, Los Angeles, California 90089, USA Harpetid and trinucleid trilobites share a similar and unusual morphology, the most striking feature ...

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 ...