﻿Description of Three Species of Fossils, 



25 



The specimens (fragments) used for this description are of various 

 forms and sizes: the entire corallum must have been of considerable 

 dimensions — probably six or eight inches in diameter and more in 

 height — as all the fragments obtained seemed to belong to one indi- 

 vidual: found by the writer in a bed of shale in the vertical section 

 of the bank of a "run" near Lebanon, Warren county, Ohio, It is 

 quite certain that only a part of the complete specimen was secured, 

 and yet enough was got out to make up a good portion of the size 

 mentioned as indicated. Cincinnati Group. 



Named in honor of the late Dr. David Dale Owen, the distinguished 

 geologist. 



Genus Cerampora, Hall. 

 Cerampora? beani, James. 

 Cerampora? beani, James. The Paleontologist, page 5, July 2, 

 1878. 



Polyzoary forming thin, irregular expansions, parasitic upon the 

 surface of Orthoceras, and probably other foreign substances. Some- 

 times in colonies, as shown on fig. 3, in other cases completely cover- 

 ing the body of sections of Orthoceras. The cells have, sometimes, 

 eccentric points from which they radiate, and are arranged in a some- 

 what quincuncial order in alternating oblique rows; but in other cases 

 they are not so regularly disposed. Cell walls rather thick and not 

 raised above the general surface; apertures slightly oblique in some 

 cases. Cell apertures generally long oval or diamond- shaped, but 

 sometimes quite irregular in form. The best specimens show, occa- 

 sionally, minute pores at the angles or junctions of some of the cell 

 walls. About three cells in the space of a line measuring the longer 

 diameter, and four or five measuring transversely, except at the radi- 

 ating points, where they are smaller. In some examples the cells and 

 cell walls resemble the non poriferous face of the fenestrules and 

 branches of Retipora, but much smaller than any specimens noticed 

 of that genus. 



Fig. 3. Fig. 3a. Fig. 35 . 



Fig. 3, a colony, grown upon Orthoceras, of Cerampora? beani, James, natural size; 

 3a, a part of the surface of same specimen enlarged 2% diameters; 3&, a smaller portion of 

 the same enlarged 10 diameters. 



