l68 NEW YORK STATE MUSEUM 



with a central perforation from which radiate a number of ridges,, 

 giving the cells often a radiately septate appearance; mesopores. 

 single, in groups or encircling the apertures. 



lf)r)S-v 





o 



Fig. 6"! Callopora elegantula with enlargements of surface, and individual tubes 



Found abundantly in the Bryozoa beds of the Rochester shale at 

 Niagara. Also common at Lockport (Hall). 



Genus phylloporina Ulrich 



[Ety.: <puMov, leaf; -6pos, pore] 



(1890. Gcol. sur. Illinois, 8:399, 639) 



Zoarium branching, with branches irregularly anastomosing, with 

 two to eight rows of apertures on one side, longitudinally striated 





/ , 



( -y 



Fig. 68 Phylloporina asperato-striata -with enlargement of celluliferous and non-celluliferous faces r 

 the latter showing the asperate-striate character 



on the other; zooecia more or less tubular, often with diaphragms, 

 and generally separated by tabulated interstitial spaces, which are 

 closed at the surface; acanthopores often present. 



