Geochemical signatures and nanomechanical properties of echinoid tests from nearshore habitats of Florida: environmental and physiological controls on echinoid biomineralization 1Institute of Paleobiology Polish Academy of Sciences, Warsaw, Poland 2Florida Museum of Natural History, University of Florida, Gainesville, FL, United States of America 3UCD Earth Institute and School of Biology and Environmental Science, Science Centre West, University College Dublin, Dublin, Ireland 4Department of...