| Affiliation: | 1. Department of Paleobiology, Smithsonian National Museum of Natural History, 10th St. & Constitution Ave. NW, Washington, DC 20560;2. Department of Natural History, Palaeobiology section, Royal Ontario Museum, Toronto, ON M5S 2C6, Canada;3. Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, ON M5S 2J7, Canada;4. Department of Earth Sciences, University of Toronto, Toronto, ON M5S 3B1, Canada;5. Université de Montréal, Département de sciences biologiques, Montréal, QC H2V 2S9, Canada |
