825 



Ptilo 



Ptilodictya (?) arctipora, Nicholson. Pal. Ohio, Vol. 2, 



III. 



Fed, Ohio 



1875, page 262, plate 25, fig. 9. natund 

 size^ fragment of cylindrical frond ; 9a, 

 enlarged portion cf it; 9i, greatly mag- 

 nified cells; but as these specimens col- 

 lected have no laminar axis, nor porous 

 edges, this minute organism (certainly 

 not a Ptylodictya) cannot be classed; 



it has some affinity to Hali's Clinto^i P. (?) raripora, — Hud 



son river strata at Cincinnati. IIIl), 



Ptilodictya bipunctata, VanCleve in Collett's Indiana 



% xxvx 



Report of 1882, page 266, plate 13, fig. 5. Three entire bry- 

 ozoon-fronds on one specimen of the Dayton limestone of Ohio, 

 considered there to represent the Clinton formation. Ya, 



Ptilodictya carhonaria. See Stictopora carbonaria. XI I R 





Ci-ito ..ir. y/ 



