66 



COELENTERATA— POEIFERA 



PHYLUM II 



or less regular ; outer layer thickened ; roots present. Common in Middle 

 and Upper Cretaceous. 



Fio. 74. 



Pachyicich-isma carteri Zittel. Upper 

 Jurassic ; Hohenpolz, Frauconia. a, 

 Sponge, 1/2 natural size ; b, Skeleton, 12/j. 







Fig. 75. 



Ventriculites striatus Smith. Quadra tenkreide ; Linden, 

 near Hanover, a, Sponge, i/.j natural size ; b, Transverse 

 section, i/x ; c. Skeleton, 12/1. 



Fig. 76. 



Coeloptycldum agan-oirhs Goldf. Upper Cretaceous ; Vordorf, near Brunswick. A, Top view. /;, Profilo. 

 C, Under surface, 2/3 natural size. D, Skeleton, co/j. 



Schizorhahdus, EJdzopoterion, PolyUastidmm Zittel ; Sporadoscinia Pomel ; 



