PLATE 27 



Diaphorostoma snyderensis Branson 

 Page 123. 



Figs. 1, 8, 9. Three views of average specimens. 



(Snyder Creek shale of Callaway County.) 



Belerophon spr. 

 Page 117. 



Figs. 2,3. Front and side views of the only specimen collected. 

 (Snyder Creek shale of Callaway County.) 



Schizodus chemungensis (Conrad) 

 Page 113. 



Figs. 4, 5, 6, 7. Left, right, and top views of average specimens. 

 (Snyder Creek shale of Callaway County.) 



