1. Revised models for depositional grand cycles, Cambrian of the southern Rocky Mountains;Aitken;Bull. Can. Petrol. Geol.,1978
2. Stratigraphy of the Middle Cambrian platformal succession, southern Rocky Mountains;Aitken;Bull. Geol. Surv. Can.,1997
3. Exceptional fossil record: distribution of soft-tissue preservation through the Phanerozoic;Allison;Geology,1993
4. Discovery of eurypterid remains in the Cambrian of Missouri;Beecher;Am. J. Sci.,1901
5. Morphology of fossil arthropods as a guide to phylogenetic relationships;Bergström,1979