516 



Report of the State Geologist. 



The structure between the thickened margins has the same 

 appearance as Polypoka, being composed of bifurcating branches, 

 connected by noncelluliferous dissepiments; cell apertures in 

 three or more ranges, with no separating carina. 



Lteoporella, Simpson. 



(Ann. Eep. of JST. Y. State Geologist for 1893. 1894.) ' 



Type, Lyrojporella quincuncialis^ Hall (sp.) . 



Bryozoum having the same manner of growth and general 

 appearance as Ltropora, but having on the narrower portion of 



Fig. 69. Lyroporella quincuncialis. Middle figure ; the thickened margin of the frond, natural size , 

 Lower figure. Noncelluliferous face of a frond, x9. 

 Upper figure. Cellulif erous face of a frond, x9. 



