PERMIAN. 419 



Bmpedocles, Cope; Proc. Amer. Phil. Soc, 1 878, p. 516; 1880, p. 634 (pre 

 occupied). 



E. phaseolinus, Cope; Pal. Bull. No. 32, 1880, p. 9. 



E. alatus, Cope; 1. c. 



E. latibuccatus, Cope; I. c. 



E. molaris, Cope; Pal. Bull. No. 32, 1880, p. 10. 



Rfissus, Cope; Proc. Amer. Phil. Soc, 1880, p. 634. 



Helodectes, Cope; Pal. Bull. No. 32, p. 11. 



H. paridens, Cope; 1. c. 



H. isaaci, Cope; 1. c, p. 12. 



Synopsis of the Species. 



xlSCeS. Gem. Species. 



Selachii 3 4 



Dipnoi , 3 5 



Teleostomata 2 3 



Batrachia. — 



Ganocephala 1 2 



Rhatchitomi 4 6 



Microsauri 1 1 



Bmbolomeri 1 2 



Reptilia. — 



Theromorpha 15 34 



Total 30 57 



DIFFERENCE BETWEEN PERMIAN AND CARBONIFEROUS. 



The highest beds of the Coal Measures have an abundant and varied in- 

 vertebrate fauna. The fossils are well preserved and there is no doubt about 

 the horizon to which they belong. They are Productus semireticulatus, Martin ; 

 Myalina subquadratd, Shumard ; Bellerophon crassus, Meek and Worthen ; Pinna 



peracuta, Shumard; Syringapora multattenuata, ; Macrocheilus ventri- 



cosus, Hall; Aviculopecten carbonareous, Shumard; Hemipronites crassus, Meek 

 and Worthen; Schizodus wheeleri, Swallow; Allorisma subcuneata, Meek and 

 Worthen, etc. Immediately above these beds come the beds of the Clear 

 Fork Division of the Permian with an entirely different character of fossils. 

 When we take into consideration that the Wichita Beds in point of time 

 come between these two series, and that the Wichita Beds are two thousand 

 feet thick, it will be understood at once that there need be no hesitancy in 

 pronouncing the two beds different, and no matter of wonder that the fauna 

 of one should be so different from that of the other. 



