PLATE 4 



Stromatopora solidula Hall and Whitfield 

 Page 56. 



Fig. 1. A small part of a surface about 10 times natural size. 

 (Snyder Creek shale of Callaway Count}-. I 



Ceratopora grabaui Branson 

 Page 56. 



Fig. 2. A specimen from which most of the branches are missing. About twice nat- 

 ural size. (Mineola limestone of Montgomery County.) 

 Fig. 3. A vertical section about twice natural size. 



Aulopora repens Knorr and Walch 

 Page 55. 



Fig. 4. A fragment on Stropheodonta demissa (Conrad). 

 (Snyder Creek shale of Callaway County.) 

 Gen. and sp. undet. 

 Figs. 5 and 6. Vertical and cross-section of fragment from the Snyder Creek shale. 

 1X6.) 



Lioclema occidens (Hall and Whitfield) 

 Page 69. 



Figs. 7 and 8. Vertical and cross-sections of zooecia. (X 30.) 

 (Snyder Creek shale of Callaway County.) 



Acervularia davidsoni Edwards and Haime 

 Page 52. 



Figs. 9 and 10. Small areas enlarged about 6 times. 

 (Callaway limestone of Boone County.) 



