HILL: GEOLOGY OF JAMAICA. 119 
Parker, and Dall, it is necessary to give a brief synopsis of them to 
Straighten ont the complications. 
Soon after the discovery of Orbitoides and Nummulina in the Jamaican 
rocks by the official surveyors, and prior to Jones's studies, Guppy noted 
the discovery of similar forms in the asphalt rocks of the cliffs at San 
Fernando, Trinidad. In these papers he also stated that * the same 
Species of Foraminifera had been detected in the Miocene rocks of 
Jamaica,? He said,’ “I have not detected any other organisms in the 
Same bed as the Orbitoides and Nummulites ; but both above and below 
It are found Tertiary fossils, probably not of more recent date than the 
Miocene age.” Sufficient “to state that the evidence derived from them 
35 hot inconsistent with the presumption of the Miocene origin of the 
deposits in question. We know too little as yet of the Tertiaries of 
this part of the world to be ablo to pronounce a more decided opinion ; 
but should the supposition of the Middle Tertiary age of the San 
"érnando Tertiaries be ultimately established, we should have here the 
remarkable phenomena of the association of an Old World with a New 
World Jorm of Lower Tertiary rhizopod in a deposit of Midale Tertiary 
aye.” Furthermore he says:* “Upon a close examination of the ver- 
tical mass [of asphaltum rock5] is found to consist chiefly of the remains 
% Nummulites and Orbitoides, two genera of Foraminifera whose shells, 
*8 is well known to geologists and paleontologists, form in various parts 
of the world thick masses of rock; the Orbitoides being generally 
“haracteristic of the Eocene period in the Western Hemisphere, while 
9 Nummulites is regarded as indicative of the Middle Eocene in 
"topo and Asia. Here, however, we find the remains of both these 
8enera in strata of supposed Miocene age." * Thus, with probable cor- 
rectness, he correlated the Jamaican Orbitoidal beds with those of 
trinidad, but erroneously referred both to the Miocene age (old 
Classifications). 
n 1863 Jones and Parker described a group of Foraminifera collected 
y Barrett from the Pteropod marls of Eastern Jamaica of supposed 
‘Scene and Pleistocene age, and differing entirely both in stratigraphic 
* See Proceedings of the Scientific Association of Trinidad, December, 1872, Port 
Spain, 1873. In this paper Mr. Guppy notes that he announced the discovery of 
®se forms in Trinidad at a previous meeting of the society in July, 1868. 
See also Proc. Sci. Association of Trinidad, 1807, p. 15. 
8 m 
i The Geologist, London, 1864, Vol. I. p. 160. 
Loc, cit., p. 159. 
Figured on page 88 of Trinidad Reports, 1860. 
A Report on the Geology of Trinidad, pp. 33 and 102, 
