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. 



y^ 



Fig. 67 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.; (fbXXov, leaf: ~6po?, pore] 



(1890. Geol. sitr. Illinois, 8:399, 639) 



Zoarium branching, with branches irregularly anastomosing, with 

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







CI 

 IT 



Iki'/ 



/ ^ 



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

 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. 



