NORTH AMERICAN EARLY TERTIARY BRYOZOA. 



725 



Laterotubigera tit!rrt>/n>rn D'Orbigny, 1852. Coniacian. 



Entalophora vendinnensis D'Orbigny, 1850. Cenomanian. 

 Berenicea tennis D'Orbigny, 1850. Oxfordian. 



pr 



FIG. 238. Mecynoccia (EntalopJiora) jtrobosvidea- Milne-Edwards, 1S38. 



A. Ovicelled branch enlarged. (After Harmer, 1915. ) B. Another ovicelled specimen, X 12. 

 (After Waters.) C. A third illustration of the ovicell, X 20. (After Neviani, 1905.) D. Longi- 

 tudinal section of a slender colony. E. Longitudinal section of a thick, old branch of variety 

 ruxtica Hagenow, 1850, with a central elongated cavity and with numerous septa. F. Longitudi- 

 nal section of a part of the internal wall, X 1250. c. i., interskeletal cavity; (/., denticles; pr., 

 prolongation. (D-F after Pergens, 1889.) 



Diastopora escharoides Michelin, 1847. Cenomanian. 

 Proboscina parvitubulata Gregory, 1896. Bathonian. 

 Diastopora davidsoni Haime, 1854. Bajocian-Bathonian. 



