125 



IHstinguishhiij; Ch^irm-ters. — Simple 

 corallniii ; cyliiidrico-conical or turbi- 

 nate outline with moderate curvature 

 at the base; circular and moderately 

 profound calyx; small t'ossula ; well- 

 pronounced, but rather small, carinse ; 

 stron<>ly wrinkled epitheca. 



Found abundantly in the coral 

 layer of the lower Moscow shales, at 

 Sections 5 to 7, and on the Lake 

 Shore; also in theDemissa bed of Sect- 

 ion 5 (one specimen ). 



Fig. 



(after Hall ). 



Heliophyllum haJli 



Fig. 8. Heliop/ii/llnni coiijlucns. From a specimen in the Stinlent Palseontological col- 

 lection of Harvard University. Cat. No. 332. (.Original.) 



