247 



12. Tertiary Corals. — 



The Tertiary formations are abundantly sup- 

 plied with Corals, chiefly belonging to the Ajpo- 

 rosa and Perforata. The Tabulata are repre- 

 sented by a single genus. There are distinct 

 traces of Alcyonaria. The Sclerobasic Zoan- 

 tharia now first present themselves. Here, too, 

 appear for the first time the Dasniidce and Stylo- 

 phoridw, whose claim to the rank of distinct 

 families is somewhat doubtful. The Dasniidce do 

 not survive the period. The following genera are 

 restricted to the Tertiary deposits ; 



TUBBINOLID^. 



Conocyathiis. 

 Dcltocyathus. 

 Leptocyathus. 

 Ecmesus. 

 Turbmolia ? 

 Piatytrochus. 

 Ceratotrochiis. 

 Discotrochus. 

 Dasmid.b. 

 Dasmia. 



OCUHNID^. 



Diplohdia. 



Astrohelia. 



Stylophorid^. 



Aroeacis. 



AsTRiEID^. 



Cydosmilia. 

 JJendrosmilia, 



Haplocoenia. 



Circophyllia. 



Tichastrcea. 



Mctastrma. 



Cryptangia. 



Cladangia. 



FUNGID^. 



Trochoseris. 

 Cyathoseris. 

 Madreporidje. 

 Lobopsamnia. 

 Stcreopsa vmia, 

 Dendrads. 



PORTTID^. 



Litharoea. 



MlLLEPORID^. 



Axopora. 

 Pennatulid^. 

 Graphularia. 



&4 



