PERMIAN. 



415 



PERMIAN FOSSILS. 



10. 

 11. 



12. 



13. 

 14. 

 15. 

 16. 

 17. 

 18. 

 19. 

 20. 

 21. 

 22. 

 23. 

 24. 

 25. 

 26. 

 27. 

 28. 

 29. 

 30. 

 31. 

 32. 



Goniatites baylorensis, n. s 



Ptychites cumminsi, n. s 



Medlicottia copei, n. s 



Popanoceras walcotti, n. s 



Orthoceras rushensis, McChesney? 

 Nautilus winslowi, Meek and Worthen. 

 N. occidentals, Swallow . . . 



n. r 



k r 



K 1 



K endolobus? , 



Naticopsis remex, White 



N. shumardi, McChesney 



Euornphalus subquadrata, M. andW. 

 ML f 



Murchisoniaf 



Patella? 



Bellerophon crassus, M. and W 



B. montfortianus, Norwood and Pratten. 

 B. ? 



Sedgwickia topekaensis, Shumard sp 

 Pleurophorus ? 



Clidophorus occidentalism Geinitz 



Yoldia subscitula, Meek and Hayden 



Myalina permiana, Swallow 



M. aviculoides, M. and H. 



M. perattenuata, M. and H 



Gervillia longa, Geinitz 



Aviculopecten occidentalism Shumard. 



Syringapora f 



Spirorbis 



Cythere nebrascensis, Geinitz 



SUMMARY. 



Mollusca. 



Cephalopoda 11 species. 



Gasteropoda 9 species. 



Conchifera 9 species. 



Articulata. 



Vermes 1 species. 



Crustacea 1 species. 



Radiata. 

 Polypi 1 species. 



Total 32 species. 



The following check list of the vertebrate fossils taken from the Wichita 

 and the lower part of the Clear Fork Beds of the Permiam in Texas was 

 kindly furnished me by Prof. E. D. Cope for publication in this Report, giv- 



