NORTH AMERICAN GEOGRAPHY AT CLOSE OF COAL ERA 



The outlines of land and water are slightly modified from the map by Professor Schuchert. The 

 border shows characteristic vegetation of that epoch, partly conventionaHzcd ; to the left, Sigillaria, 

 .Xeuropleris. to right Calamites. Sphenopleris. Below is a sketch restoration of Eryops, and above, one 

 of the giant "dragon flies," Meyaneura 



"The dragon fly tliat darted over the head of the slow-crawling Eryops might seem, except in size, . . . 

 a far more promising candidate for the position of ancestor to the intelligent life which was to appear in 

 the dim futm-e " 

 198 



