FBCLASS I 



TETEACORALLA 



85 



I 



^^pd Devoniaii. Crepidophyllum Nich. Craspedophyllum Dybowski. Devonian. 

 ^Ktoninckophyllum Nich. Chonaxis E, and H. Carboniferous. Clisiophylhm 

 ^^Pana. Silurian to Carboniferous. 

 ^H Oinphyma llsiL (Fig. 116). Corallum simple, conical or turbinate ; theca 



I 



Fig. 113. 



Cyathophyllum heteropliyllum E. and H. Middle De- 

 vonian ; Gerolstein, Eifel. A, Transverse ; B, Longi- 

 tudinal section (after Nicholson). 



Fig. 114. , 



Campophyllum com- 

 pressum Ludw. Car- 

 boniferous Limestone ; 

 Hausdorf, Silesia. a, 

 Longitudinal ; b, Trans- 

 verse section. 



Fig. 115. 



Diphyphyllum con- 

 cinnum Lonsd. Car- 

 boniferous Lime- 

 stone ; Kamensk, 

 Ural. 



with root-like processes. Septa numerous ; the four principal septa in shallow 

 fossulae. Surface marked with pinnafcely branching Striae. Tabulae numerous. 

 Silurian. 



Chonophyllum E. and H. Silurian and Devonian. 



Fig. 116. 



Oinphyma subturbinata B. and H. Silurian limestone 

 Gotland, Svveden. a, Side view ; h, Calice from above. 



Fig. 117. 



Lithostrotion 

 martini E. and H. 

 Lower Carbonifer- 

 ous ; Hausdorf, 

 Silesia. Sections 

 of individual 

 corallite (after 

 Kunth). 



Ptychophyllum E. and H. Simple and turbinate, or composite. Each 

 stock is composed of funnel-shaped, invaginated layers, representing calicinal 

 buds, the marginal lips of which are more or less reflected outwards. Septa 

 numerous and strongly twisted in the centre to form a pseudo-columella ; their 



