306 



BRADFORD ENCRINITES. 



Fig. 364. 



[CaXX 



Eunomia radiata, Lamouroux. {CalamophyUia, Milne Edw.) 



a. Section transverse to the tubes. 



b. Vertical section, showing the radiation of the tubes. 



c. Portion of interior of tubes magnified, showing striated surface. 



eter ; and having probably required, like tbe large existing brain-coral 

 {Meandrina) of the tropics, many centuries before their growth was 

 completed. 



Different species of Crinoideans, or stone-lilies, are also common in 

 the same rocks with corals ; and, like them, must have enjoyed a firm 

 bottom, where their root, or base of attachment, remained undisturbed 

 for years (c, fig. 365). Such fossils, therefore, are almost confined to 



Fig. 365. 



ApiocHnites rotundus, or Pear Encrinite ; Miller. Fossil at Bradford, Wilts. 



a. Stem of ApiocHnites, and one of the articulations, natural size. 



b. Section at Bradford of great oolite and overlying clay, containing the fossil encrinites. See text 



c. Three perfect individuals of Apiocrinites, represented as they grew on the surface of the Great 



Oolite. 



d. Body of the Apiocrinites rotundus. 



the limestones ; but an exception occurs at Bradford, near Bath, where 

 they are enveloped in clay. In this case, however, it appears that the 

 solid upper surface of the " Great Oolite" had supported, for a time, a 

 thick submarine forest of these beautiful zoophytes, until the clear and 

 still water was invaded by a current charged with mud, which threw 

 down the stone-lilies, and broke most of their stems short off near the 

 point of attachment. The stumps still remain in their original position ; 

 but the numerous articulations once composing the stem, arms, and body 

 ' of the zoophyte, were scattered at random through the argillaceous de- 



