Phylogeny and evolutionary modularity of a trilobite family over the Ordovician Radiation by Ernesto E. Vargas-Parra, Melanie J. Hopkins

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The oldest known digestive system consisting of both paired digestive glands and a crop from exceptionally preserved trilobites of the Guanshan Biota (Early Cambrian, China). by Melanie J Hopkins, Feiyang Chen, Shixue Hu, Zhifei Zhang

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Gill function in an early arthropod and the widespread adoption of the countercurrent exchange mechanism by Jin-Bo Hou, Nigel C. Hughes, Melanie J. Hopkins, Degan Shu

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Permian trilobites and the applicability of the “living fossil” concept to extinct clades by Melanie J. Hopkins, Peter J. Wagner, Peter J. Wagner, Katherine J. Jordan

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Ignoring Fossil Age Uncertainty Leads to Inaccurate Topology and Divergence Time Estimates in Time Calibrated Tree Inference by Joëlle Barido-Sottani, Joëlle Barido-Sottani, Joëlle Barido-Sottani, Nina M. A. van Tiel, Nina M. A. van Tiel, Melanie J. Hopkins, David F. Wright, David F. Wright, Tanja Stadler, Tanja Stadler, Rachel C. M. Warnock

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