BRADFORD ENCRINITES. 
343 
Fig. 380. 
Apiocrinites rotundus^ or Pear Encrinite; Miller. Fossil at Bradford, Wilts. 
a. Stem of Apiocrmites^ and one of the articulations, natural size. b. Section at Brad¬ 
ford 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. Half natural size. 
of such local development that in many places it can not 
easily be separated from the clays of the overlying “ forest- 
marble” and underlying “fuller’s earth.” The upper sur¬ 
face of the calcareous stone below is completely incrusted 
over with a continuous pavement, formed by the stony roots 
or attachments of the Crinoidea; and besides this evidence 
of the length of time they had lived on the spot, we find 
great numbers of single joints, or circular plates of the stem 
and body of the encrinite, covered over with serpulce. Now 
these serpitlce could only have begun to grow after the death 
of some of the stone-lilies, parts of whose skeletons had been 
strewed over the floor of the ocean before the irruption of 
Fig. 331. 
a. Single plate of body of Apiocrinus^ overgrown with serpulce and bryozoa. Natural 
size. Bradford Clay. b. Portion of the same magnified, showing the bryozoan Di- 
astopora diluviana covering one of the serpulce. 
argillaceous mud. In some instances we find that, after the 
parisitic serpulce were full grown, they had become incrusted 
over with a bryozoan, called Diastopova diluviana (see 
