Bird Dropping
                This is from a sample of a bird dropping outside
                  on a fence.
                
              
              
                Transmitted Crossed Circular Polarized Light
                
Definition/Function:
                Significance in the Environment:
                Characteristic Features:
                Associated Particles:
                References:
                Rapp, George Jr. and Susan C. Mulholland (eds) 1992, PHYTOLITH SYSTEMACTICS: EMERGING
                ISSUES, PLENUM PRESS
                Piperno, Dolores R. (2006), PHYTOLITHS: A COMPREHENSIVE GUIDE FOR ARCHAEOLOGISTS AND
                PALEOECOLOGISTS, ALTAMIRA PRESS.