IOS FLORIDA GEOLOGICAL SURVEY-EIGHTH ANNUAL REPORT. 
of the rostrum is injured. For this species the writer suggests the 
name Globicephalus baereckeii. The type specimen is in the col¬ 
lection of Stetson University at DeLand. 
SUMMARY. 
The vertebrates of the Alum Bluff formation as indicated, by 
the species obtained from the fuller’s earth horizon indicates the 
Miocene age of the formation. The vertebrates obtained from the 
Alachua and Bone Valley formations (hard rock and land pebble 
phosphate deposits) indicate that the two formations are approx¬ 
imately contemporaneous in time, and are to be referred either to 
the upper Miocene or to the lower Pliocene, the probabilities ap¬ 
parently being in favor of their being of Pliocene age. 
With regard to the Pleistocene vertebrates of Florida it may 
be said in conclusion that the mixing of faunas on Peace Creek 
and at some other localities on the Gulf Coast of Florida is due 
to the fact that the streams cut through the thin Pleistocene de¬ 
posits and into the older formations. More satisfactory localities 
for studying the Pleistocene vertebrates are found on and near the 
Atlantic Coast, where Pleistocene deposits containing vertebrate 
fossils rest upon marine Pleistocene shell marl in which are found 
few land fossils, and where there is accordingly no opportunity 
for the mixing of faunas. At these localities, the fauna is found 
to present none of these anomalies erroneously attributed in the 
existing literature to the Pleistocene of the Gulf Coast of Florida. 
On the contrary it is found to be a normal Pleistocene fauna con¬ 
taining, however, a very considerable number of species relating 
to the South American fauna. 
