172 TETRAPOKA. 



Family OSCULIPOEID^E. 



SYNONYMY : 



Osculiporidce, Marsson. 

 Fasciculiporidte, Pergens and Meunier. 

 Fascigeridce, pars, D'Orbigny. 



Diagnosis. Cyclostomata Tubulata in which the zooecia are 

 simple, elongate, open tubes, which pass (? always) through a 

 Defrancia stage. The zocecia are monomorphic and very long. 

 They are grouped into stems. The apertures open in clusters at 

 intervals along the stem. 



Affinities. This family is allied to the Fascigeridae and the 

 Theonoidae. It differs from the former by having clusters of 

 apertures at intervals along the stems, instead of having them all 

 terminal in position. It differs from the latter by having the 

 apertures in clusters, instead of along ridges. 



The family contains many important Cretaceous genera, such as 

 Desmeopora, Osculipora, and Cyrtopora. The only Jurassic Bryozoan 

 which appears to be referable to this family is a fragment figured 

 by Quenstedt. His figure is clear, but the magnification is low, 

 and I feel doubtful about accepting it. Nevertheless, if the figure 

 is to be trusted, the specimen is certainly an Osculiporoid Bryozoan. 



TETRAPOKA, Quenstedt, 1858. 



This generic name was used without diagnosis for the following 

 species : 



Tetrapora suevica, Quenstedt. 



SYNONYMY : 

 Tetrapora suevica, Quenstedt, 1858, Der Jura, p. 666, pi. Ixxxi. figs. 77-8. 



Distribution. "Weisser Jura, 7 : Bollert, "Wiirtemberg. 



Family THEONOID^E, Busk, emended. 



SYNONYMY : 



Theonoida, pars, Busk. 

 Radioporidce, pars, Marsson. 

 Tubigeridce, pars, D'Orbigny. 



