1. Stratigraphy of the Middle Cambrian platformal succession, Southern Rocky mountains;Aitken;Geological Survey of Canada Bulletin,1997
2. The Cathedral Reef Escarpment; a Cambrian great wall with humble origins;Aitken;Geos,1984
3. In situ benthos and paleo-oxygenation in the Middle Cambrian Burgess Shale, British Columbia, Canada;Allison;Geology,1995
4. Trilobites in Paleozoic predator-prey systems, and their role in reorganization of early paleozoic ecosystems;Babcock,2003
5. Origins and early evolution of predation;Bengtson,2002