Cuap. VIII. 
OF CREATION. 
THE MEDALS 
286 
A 
Wy 
(J oF 
ALTE TT TS 
EO 
pth} 
ei ae 
OS 
LL 
S OF CRINOIDEA. 
ILLUSTRATION 
aie 
LIGN. 
(Dr. Thompson.) 
la.—A single ComaTuLa of the same group, magnified. 
Fig. 1.—Group of Living ComaTuLa; nat. 
Silurian, Ohio. 
4.—Surfaces of two pentapetalous ossicula. 
2.—PENTREMITES PYRIFORMIS. 
3, 
Chalk. 
5.—A single Ossicle of an APIOCRINUS. 
; the receptacle with part of the 
6.—ENCRINUS LILIIFORMIS 
From Brunswick. 
7.—PENTACRINITAL stem with four angles. 
; 3 nat. 
column attached 
8.—ENTROCHITE, composed of five smooth ossicles. 
9.—Quadrangular stem of seven ossicles. 
(Sil. Syst.) 
11.—Receptacle of BourQUETICRINUS; from the Chalk. 
10.—CYATHOCRINUS TUBERCULATUS. 
Lewes. 
