SECOND ANNUAL REPORT-STRATIGRAPHIC GEOLOGY. 
133 
About 300 yards farther north and on the same side of the river 
a thin bed of gray limestone appears in places unconformably above 
the marl, and in other places the overlying sand is partially indurated. 
This limestone is probably of Pleistocene age. 
About two miles north of the first locality, an exposure of shell 
marl one-half foot thick is capped by a deposit of clay and sand which 
is probably alluvial. From this locality a few species 1 were obtained. 
They include: 
Locality:—East side of St. Johns River, seven miles below the 
railroad bridge near Sanford. 
Area campy la Dali. 
Crassinella lunulata Conrad. 
Phacoides multilineatus T. and H 
Chione cancellata Linn. 
Transennella caloosana Dali. 
Geologic Horizon :—Probably Pliocene. 
From a well near Kissimmee, Dr. Vaughan obtained a sample con¬ 
taining the fossils listed below. They show the existence of Pliocene 
beds at a depth of 150 feet, and under the head of Pleistocene lists of 
fossils are given which show the post-Pliocene beds at Kissimmee are 
at least 100 feet thick. 
Locality:—From well of Mary Boss, on island in Lake Tohope- 
kaliga, about three miles from Kissimmee, depth 150 feet. 
Anomalocardia caloosana Dali. 
Semele. 
Abra aequalis Say. 
Corbula contract a Say. 
Tornatina canaliculata Say. 
Olivclla, mutica Say. 
Marginella fragment. 
Scala linedta Say. 
Turritetta subannulata Hpn. 
Turritella apicalis Hpn. 
Crucibuluni auricula Gmel. 
Dentalium caloosaense Dali. 
Cadulus quadridentatus Dali? 
Nucula proximo Say. 
Leda, n. sp., also Shell Creek Plio¬ 
cene. 
Geologic Horizon :—Pliocene. 
Pecten gibbus Linn. 
Anomia simplex Orb. 
Venericardia tridentata Say. 
Phacoides, worn specimens. 
Callocardia sayana Conrad. 
Chione cancellata Linn. 
Gemma trigona Dali. 
Gemma sp. 
Parastarte triquetra Conrad. 
Ensis, fragment. 
Mulinia lateralis Say. 
Balanus sp. 
ALACHUA CLAY. 
The non-marine Pliocene of Florida includes the Alachua clay, 
which is apparently a terrestrial or fresh-water deposit. It was de¬ 
scribed by Dali 2 in 1892: 
1 Identifications by Dr. Vaughan. 
J Dali, Wm. H., Neocene of North America, U. S- Geol. Survej', Bull. 84. 
1892, p. 127. 
