﻿GEOLOGY AND PALEONTOLOGY OP THE CANAL ZONE. 



219 



formation are listed below. Descriptions of the raollusca by C. W. 

 Cooke will appear in a forthcoming publication of the Carnegie In- 

 stitution of Washington. The corals are as follows: 



Fossil corals from the La Cruz marl, Cuba. 



Name. 



Stylophora affinis Duncan 



PoHllopora species 



Stephanocoenia interscpta (Esper) 



Orbicella limbata (Duncan) 



Solenastrea hyades (Dana) 



boarnoni M. ?;dwards and Haime. 



Thysanus aff . T. excentricus Duncan 



Siderastrea siderea (Ellis and Solander) 



Goniopora jjicobiana Vaughan 



Poriles porites (Pallas) 



astreoides (Ijamuck) 



Santo 



Domingo 



above 



zone If. 



Santo 



Domingo 



zone 11 



Bov,-den. 



Recent. 



Of 11 species listed above, 5 are now living in the Antillean re- 

 gion; but of the 8 genera represented, 4, i. e. 50 per cent, are now un- 

 known in the Atlantic Ocean. The horizon appears to be above that of 

 the Bowden marl, and to be near zones D and E of the table on 

 page 217. I obtained numbers of poor prints and casts of corals 

 near or at the base of the formation in the vicinity of Santiago. 

 Although they are too poor for determination, they resemble in 

 form the species of Placocyatlius, AsterostniUa, Antillia, Thysanus, 

 and Syzygophjllia, of the Santo Domingan deposits. Similar poor 

 casts and imprints suggest that this is a widely distributed formation 

 in Cuba. 



FLORIDA. 



ALUM BLUFF FORMATION. 



The coral fauna of the Chipola marl, member of Alum Bluff forma- 

 tion is small, comprising four species representing as many genera, 

 namely, Styloyliora, Antillia, a new genus that resembles a Thysanus 

 with a commensal sipunculid worm in its base, and Gonio-pora. 



The coral fauna of the Alum Bluff formation is meager. Exclud- 

 ing the Chipola marl member it comprises the following species: 

 Fossil corals from the Alum Bluff formation. 



Oak I White 

 Grove. Springs.i 



Tampa 

 brick- 

 yard. 



A strhelia new species 



Siderastrea hillsboroensis Vaughan. 



silecensis Vaughan 



Goniopora jacobiana Vaughan 



1 For description of the stratigraphic relations of beds at White Springs see Vaughan, T.W., and Cooke, 

 C. W., Correlation of the Hawthorne formation, Washington Acad. Sci. Journ., vol. 4, pp. 250-253, 1914. 



Although, in my opinion, the formation in which these corals occur 

 should be referred to the Miocene, I beheve it is very low Miocene, 



