776 



FLORAL ZONES OF THP: POTTSVILLK FORMATION. 



Table i>}i(nfiiifj the ohtffrred fjeogmphir awl xlrnlifinipJiic 



|\,,Ti-— Till- liv]iln-ns }ii't\veen the numbers of the coals indicate that the fossils were collected 

 the species associated on a slab or rock fragment to identify the horizon 



