si B-CLA88 I 



ANTHOZOA TETRACOBALLA ~~ 



i, E. and H. (Fig. 118). Like the preceding, but >cjta not 

 to the centre. Devonian and Carboniferous Limestone. 



Hall. I'snally simple and turbinate, more rarely forming 



|r 



rli/iH/iiit Ji'-ti-i-'ii'lii/Hum E. and H. .Middl 

 Devonian; Gerolstein, Eifel. ^4, Transverse ; /^Longi 

 tudinal section (after Nicholson). 



Fi.;. 118. 



< '<* in jHijili i/ll a m rnni- 

 / * ri xxii in. Ludw. Car- 

 boniferous Limestone ; 

 Hausdorf, Silesia. u, 

 Longitudinal ; b, Trans- 

 verse section. 



Fio. ll'J. 



Diphyph 



'in, i a in, Lonsd. 

 Carboniferous 

 Li nic.st one; Ka- 

 nn-nsk, Ural. 



dendroid colonies. Septa numerous, extending to the centre, and thickened 

 on their sides by conspicuous vertical ridges ("carinae "). Devonian. 



l)ifilii()JiyUum t Lonsd. (Fig. 119). Ordovician to Carboniferous. PJ/ol /</<>- 

 1'iliyllum, Lindstr. Ordovician and Silurian. Eridophyttum, E. and H. Silurian 



Uuttla 



;uid Devonian. 



E. and H. Silurian limestone; 

 ", Side view ; 1>, Calice from above. 



Lithoxt i otto* 

 ,B.andH. 



Carbon. Limcst. ; 

 Maiisdnrf, Sili-sia. 

 Sections of in- 

 dividual corallite 

 (after Knntli). 



^ Dyb. 

 Carboniferous. 



Devonian. 



CrepidofJiyUiim, Xich. 

 Nich. Chona.w, E. and H. 

 Silurian to Carboniferous. 



, Eaf. (Fig. 120). Corallum simple, conical, or turbinate ; th.-ra 

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



\ >.ma. 



