Nathan J Lyons¹, Pedro Val², James S Albert³, Jane K. Willenbring⁴ and Nicole M Gasparini¹, (1)Tulane University, Department of Earth and Environmental Sciences, New Orleans, LA, United States, (2)Federal University of Ouro Preto, Department of Geology, Ouro Preto, Brazil, (3)University of Louisiana, Department of Biology, Lafayette, LA, United States, (4)Scripps Institution of Oceanography, UC San Diego, La Jolla, CA, United States