Research Objectives.- Geological Background.- Paleoenvironmental Interpretation of the Dundee Formation (Whitehouse Quarry).- Previous Paleontological Faunal List from the Dundee Formation.- Materials and Methods.- Results - Paleontological Analysis.- Taphonomy of Shells.- Trace Types.- Nature and Position of Traces on Rhipidomella Shells.- Encrustation of Trace-Makers.- Discussion.- Epizoan-Host Relationships.- Four Possible Causes for Rare Encrustation...