ACTIN0Z0A. 



241 



*ic* MESOZOIC, CAINOZOIC, and EECENT COEALS, which 

 i ! occur in more than one Geological Period — continued. 











Names of Periods. 



Names of Genera 



arranged in order of their 



appearance. 



• 



H 



Jurassic. 



Cretaceous. 



Tertiary. 



• 



o 



Symphyllia 



Plesiastraea 



Solenastrsea 



Astrsea 



Prionastrsea 



Astrangia . 



Phyllangia 



Eupsamnia 



Endopachys 



Balanophyllia , 



Dendrophyllia , 



Madrepora 



Turbinaria 



Astrseopora 



Porites 



Ehodarsea . 



Virgularia 



Mopsea 



Hyalopathes 





• 



* 



• 



: 



1 



■ 



passes up into the Trias. With this 

 exception no genus of Corals survives the Paleozoic 



epoch except, perhaps, Isis, of which doubtful in- 

 dications have been met with in rocks of very 

 ancient date. 



No Triassic genus of Corals has recent represen- 

 tatives. Of genera which occur in the Jurassic 

 series seven still survive. Fourteen recent genera 



