1. Department of Knowledge, Royal BC Museum, Victoria, British Columbia, Canada
2. School of Earth and Ocean Sciences, University of Victoria, Victoria, British Columbia, Canada
3. Paleontology, North Carolina Museum of Natural Sciences, Raleigh, NC, USA
4. Department of Biological Sciences, North Carolina State University, Raleigh, NC, USA
5. Department of Natural History, Royal Ontario Museum, Toronto, Ontario, Canada
6. Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, Ontario, Canada