FOSSILS OF THE LAND PEBBLE PHOSPHATE DE¬ 
POSITS. 
MASTODON AND RHINOCEROS. 
Fig. 35-—Mastodon. At the left unworn lower molar. Two-thirds natural 
size. From pit of the Standard Phosphate Company, Christina, Fla. Geol. Surv. 
collection No. 2275. At the right slightly worn molar. From Prairie Pebble 
Phosphate Company, Mulberry. Fla. Geol. Surv. collection No. 4556. No. 2275, 
80 by 55 mm; No. 4556, 75 by 85 mm. 
Fig. 36.—Tip of the tusk of a mastodon, probably M. ( Trilophodon ) flor- 
idanus Leidy. Approximately two-fifths natural size. The tusk is characterized 
by a band of enamel by which this mastodon is distinguished from the Pleisto¬ 
cene mastodon, Mamniat americanum , the tusk of which has no enamel. From 
pit of the Amalgamated Phosphate Company, Brewster. Fla. Geol. Surv. collec¬ 
tion No. 2371. Length of specimen as preserved 26 cm; width 8 cm. Width of 
band of enamel 49 mm. 
Fig. 37.—Lower jaw of rhinoceros from pit of the Amalgamated Phosphate 
Company, Brewster. Approximately one-fourth natural size. Fla. Geol. Surv. 
collection No. 3636. Length of molar-premolar series, 26 cm; length of molar 
series 14.5 cm; crown of third premolar, 38 mm; fourth premolar, 40 mm; first 
molar, 47 mm; second molar, 50 mm; third molar, 48 mm. 
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