148 
FLORIDA STATE GEOLOGICAL SURVEY. 
indicating widespread uniformity of conditions governing deposition. 
Local Details:—In general, the Quaternary formations of the 
northern part of the State, and as far south as Lake Okeechobee 
present very little variation, and hence, the discussion of local details 
is omitted except in the case of the shell marls. A section of the 
Pleistocene shell marl at Orient station, where it rests unconformably 
on the Tampa formation, shows: 
White sand . 2 feet. 
White sandy marl .... 6 feet. 
Light gray sand .. 1 foot. 
Gray shell marl . 0-1 foot. 
Total . 7-8 feet. 
The lower member of the above section furnished the fossils listed 
below P 
Locality:—Six-Mile Creek, Orient, Hillsboro Bay, ^ hiile + be¬ 
low R. R. bridge. 
Marginella apicina Menke. 
Olivella mutica Say. 
Fasciolaria distans Lam. 
Fulgur perversum Linn. 
Fulgur pyrum Dillwyn. 
Melongena corona Gmel. 
Tritonidea cancellata Conrad. 
Nassa vibex Say. 
Muricidea floridana Conrad. 
Urosalpinx perrugatus Conrad. 
Neverita duplicata Say. 
Crepidula convexa Say. 
Area transversa Say. 
Ostrea young, virginica Gmel. 
Pecten gibbus Linn. 
Carditamera arata Conrad. 
Geologic horizon :—Pleistocene. 
In a ditch about mile south of Manatee Station, there is an 
exposure of sandy marl which contains an abundance of fossils. The 
species 1 2 collected at this locality are given below. 
Locality:—Ditch, side of railroad, % mile south of Manatee Sta¬ 
tion, 2 to 4 feet from the surface. 
Bulla striata Brug. 
Tornatina canaliculata Say. 
Terebra pro text a Conrad. 
Terebra dislocata Say. 
1 Identifications by Dr. Vaughan. 
2 Identifications by Dr. Vaughan. 
Olivella mutica Say. 
Volutella ovuliformis Orb. 
Marginella apicina Menke. 
Fulgur perversum Linn. 
Phacoides anodonta Say. 
Phacoides multilineatus T. and H. 
Cardium isocardia Linn. 
Laevicardium mortoni Conrad. 
Callocardia sayana Conrad. 
Transennella caloosana Dali. 
Macrocallista nimbosa Sol. 
Venus campechiensis Gmel. 
Chione cancellata Linn. 
Anomalcocardia caloosana Dali. 
Tagelus divisus Spengl. 
Semele purpurascens Gmel. 
Spisula similis Say. 
Mulinia lateralis Say. 
Corbula cuneata Say. 
