132 
FLORIDA STATE GEOLOGICAL SURVEY. 
from De Leon Springs contained the following species and these show 
that there are beds of Pliocene as well as Miocene represented in the 
section. The determinations were made by Vaughan, and his com¬ 
ment upon the list is appended. 
Locality:—One-half mile ( + ) south of De Leon Springs Station, 
Volusia County, Florida. Eleven to seventeen feet below surface . 1 
Marginella contracta Conrad. 
Terebra dislocata Say. 
Oliva liter at a Lam. 
Melongena corona Gmel. 
Crepidnla aculeata Gmel. 
Crepidula convexa Say. 
Crepidula plana Say. . 
Cryptonatica pusilla Say. 
Area transversa Say. 
Area pondcrosa Say. 
Area limula vcr. platyura DalL 
Area plicatura Say. 
Pecten gibbus Linn. 
Carditamera arata Conrad. 
Venericardia tridentata Say. 
Phacoides multilineatus T and Id. 
Phacoidcs waccamensis Dali. 
Phacoides radians Conrad. 
Cardium robustum Solander. 
Cardium isocardia Linn. 
Venus campeehiensis Gmel. 
Chione canccllata Linn. 
Mulinia lateralis Say. 
Corbula inaequalis Say. 
Geologic Horizon:—“Pliocene (Compare Dr. Dali’s previous refer¬ 
ence to Miocene at DeLeon Springs, Wag. Free Inst. Sci.)” 
On the east side of the St. Johns River, about five miles north of 
the Atlantic Coast Line Railroad bridge in Volusia County, there is a 
low exposure of sandy loam, sand and marl. The upper member con¬ 
sists of about two feet of light colored sandy loam which passes by 
gradual transition to a coarse-grained gray sand. Beneath this sand, 
and probably separated from it by an unconformity, is a bed of light 
green clayey marl containing many well preserved shells. From this 
locality was obtained the fossils listed below. The Pliocene age of the 
marl is inferred from the presence of Cardium oedalium. 
Locality:—East side of St. Johns River, five miles below the San¬ 
ford Railroad bridge . 2 
Tornatina canaliculata Say. 
Olivella mutica Say. 
Fulgur pyrum Dillwyn. 
Fulgur perversum Linn. 
Nassa elevata Say. 
Nassa vibex Say. 
Crepidula fornicata Say. 
Nucula proximo Say. 
Area transversa Say. 
Mytilus venustus Linn. 
Geologic Horizon :—Probably 
of Cardium oedalium. 
Phacoides multilineatus T. and H. 
Cardium oedalium Dali* 
Laevicardium serratum Linn. 
Anomalocardia caloosana Dali. 
Venus campeehiensis Gmel. 
Chione cancellata Linn. 
Tellina declivis Conrad. 
Corbula contracta Say. 
Mulinia lateralis Say. 
P ho las cost at a Lam. 
:ene, inferred from the presence 
1 Determined by Dr. Vaughan. 
2 Identifications by Dr. Vaughan. 
