210 



NEW YORK STATE MUSEUM 



This genus has essentially the same structure as C a m p - 

 t p h y 1 1 u m, with the exception that the sides of the septa are 

 carinated, the carinations forming serrations or denticulations 

 on the margins of the septa. 



It differs from that genus in the same manner that Hello- 

 p h y 1 1 u m differs from Oyathophyllum. 



28 29 



Fig. 28Charactophyllum nanum H. and W. Longitudinal sec- 

 tion 

 29 Chairactophyllum radlculum Bominger, Longitudinal 

 section showing oblique carinae, cysts, and strong tabulae 



Odontophyllum, gen. nov. 



Type: Aulacophyllum convergens Hall. Fossil corals of the 

 Niagara and Upper Held, groups. 1882. p. 22, and 12th rep't 

 Indiana geologist, p. 281, pi. 17, fig. 1, 2. Onondaga limestone, 

 Falls of the Ohio. 



Forms having the same characters as Aulacophyllum, 

 but with the sides of the septa carinate and their margins dentic- 

 ulate as in Heliophyllum. 



SoENOPHYLLUM, gm. fiov. 



Type: ZapJirentis conigera Eominger. Geol. sur 

 pt 2, p. 149, pi. 40. Onondaga limestone. 



of Michigan. 



