THE MERCHANTVILLE. 



59 



ANALYTICAL DISCUSSION Of 1 THE MRCHANTVII,IvE FAUNA. 



The data recorded in the preceding table may be summarized 

 as follows, to show the number of species common to the Mer- 

 chantville and to 'each of the other formations in the series. 

 Thirty-three of the species or 32 per cent, which have been recog- 

 nized in the Merchantville have not been seen in any other hori- 

 zon, which leaves 69 species having a greater range. 



