1. Department of Earth and Environmental Sciences, Wesleyan University, Middletown, CT 06459, USA
2. Department of Geology, Baylor University, Waco, TX 76798, USA
3. Department of Geosciences, Pennsylvania State University, University Park, PA 16802, USA
4. Museo Argentino de Ciencias Naturales ‘B. Rivadavia’, Buenos Aires, Argentina
5. Florida Museum of Natural History and Department of Biology, University of Florida, Gainesville, FL 32611, USA
6. Department of Biological Sciences, Seoul National University, Seoul 151, Korea
7. Smithsonian Tropical Research Institute, Apartado Postal 0843‐03092, Balboa, Ancon, Panama
8. Department of Geology, Miami University of Ohio, Oxford, OH 45056, USA
9. Department of Geology, St Lawrence University, Canton, NY 13617, USA
10. Faculty of Science, University of Chile, Institute of Ecology and Biodiversity, Santiago, Chile
11. North Dakota Geological Survey, Bismarck, ND 58505, USA
12. Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, 1900 La Plata, Argentina
13. Denver Museum of Nature and Science, Denver, CO 80205, USA
14. School of Plant Science, University of Tasmania, Private Bag 55, Hobart 7001, Tas., Australia
15. Biodiversity Research Centre, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
16. John Day Fossil Beds National Monument, National Parks Service, Kimberly, OR 97848, USA
17. Department of Earth Science, University of California Santa Barbara, Santa Barbara, CA 93106, USA
18. Department of Biological Sciences, Macquarie University, Sydney, NSW 2109, Australia
19. Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Tartu 51014, Estonia
20. Global Ecology Unit CREAF‐CEAB‐CSIC, Center for Ecological Research and Forestry Applications, Universitat Autònoma de Barcelona, Barcelona, Spain
21. Ecology Group, Institute of Natural Resources, Massey University, Private Bag 11222, Palmerston North, New Zealand
22. Department of Paleobiology, Smithsonian Institution, National Museum of Natural History, Washington, DC 20013, USA