1. A WINDOW INTO THE CAMBRIAN: EXCEPTIONALLY PRESERVED ARTHROPODS FROM QUEBEC AND WISCONSIN COLLETTE, Joseph H., Department of Geosciences, University of Massachusetts, Amherst, MA., 01003 And HAGADORN, James W., Department of Geology, Amherst College, Amherst, MA 01002.

2. Blackberry Hill Lagerstätte Mosinee erosional outlier A A’

3. Potsdam Sandstone Melocheville, Quebec Image © Ronald Blakely, used with permission

4. Ichnology 1 cm Phyllocarid Undescribed looping trackway

5. * Vertical exaggeration in block diagrams Preservational Model Channel 8.5 cm Overbank Levee

6. Wisconsin phyllocarids 1 cm

7. Aglaspinoids 1 cm Phyllocarid

8. Quebec Arthropods 1 cm

9. Wisconsin Phyllocarid Reconstruction Based on 45 specimens

10. Wisconsin ‘Phyglaspicarcinoids’ Based on 3 specimens

11. Quebec ‘aglaspinoid’ Based on 2 specimens

12. Phylogeny Produced with PAUP 4.10b C/S Data from Rode & Lieberman (2002) And Briggs et al. (2003)

13. Phylogeny Produced with PAUP 4.10b

14. Acknowledgments GSA Graduate Student Research Grant. Geological Society of America Evolving Earth Student Grant. Evolving Earth Foundation. Gerald M. Friedman Fund. Society for Sedimentary Geology. Lerner-Gray Grant for Marine Research. American Museum of Natural History. Paleontological Society Student Research Grant. The Paleontological Society. Student Award In Systematic Paleontology. Paleontological Research Institute. Thanks also to D. E. K. Briggs and A. L. Stigall for their help with this project

15. Associated Fauna 1 cm 10 cm Scyphomedusa3-D Scyphomedusa ClimactichnitesUndescribed arthropod trackway