
            
            By: magic-gigapans
            
              Image: Callan Bentley, Mid-Atlantic Geo-Image Collection
                
            
            
              License:
                 Creative Commons Non Commercial ⧉
              
            
          
            Uploaded: 17 Apr 2020
            Last Updated: 27 May 2020
          
              251 megapixels
            19,327 x 12,985 pixels
            64.4 in X 43.3 in at 300dpi
            
              6,160 pixels per inch
          
Index fossils that help define the Ordovician/Silurian boundary stratotype.