1 Division of Paleontology, American Museum of Natural History, New York, NY, USA.
2 Department of Earth and Planetary Sciences, Yale University, New Haven, CT, USA. jwiemann@caltech.edu.
3 Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, USA. jwiemann@caltech.edu.
4 Departamento de Geodinámica, Estratigrafía y Paleontología, Facultad de Ciencias Geológicas, Universidad Complutense de Madrid, Madrid, Spain. irismene@ucm.es.
5 Departamento de Cambio Medioambiental, Instituto de Geociencias (UCM, CSIC), Madrid, Spain. irismene@ucm.es.
6 Department of Earth and Planetary Sciences, Yale University, New Haven, CT, USA. mfabbri@fieldmuseum.org.
7 Negaunee Integrative Research Centre, Field Museum of Natural History, Chicago, IL, USA. mfabbri@fieldmuseum.org.
8 Departamento de Ciencias Geológicas, Universidad de Buenos Aires, Buenos Aires, Argentina.
9 Earth Sciences, Montana State University, Bozeman, MT, USA.
10 CONICET, Museo Paleontológico Egidio Feruglio, Trelew, Argentina.
11 Department of Geoscience, University of Calgary, Calgary, Alberta, Canada.