7. Vero, St. Lucie County.—At this place have been found well-preserved remains of Mammut americanum. Besides a part of a lower jaw, there are some parts of tusks and fragments of other parts. The right side of a palate containing the second and the third true molars, found in what has been called stratum No. 2, has been figured by Sellards (8th Ann. Rep. Florida Geol. Surv., plate XXXI). The age of these will be discussed on pages [381]–[384].
14. Palm Beach, Palm Beach County.—In his report of 1916, already cited, Dr. Sellards noted the fact, on page 105, that several teeth of Mammut americanum had been obtained by him, 8 miles west of the Florida East Coast Railroad, in the canal constructed to drain the Everglades. From the same canal had been secured Elephas columbi, Equus complicatus, and a femur of a species of Bison. Sellards informs us that the vertebrate fossils here, as at Vero and many other localities, are embedded in the sand and muck beds which lie above the Pleistocene marls.
8. Hillsboro County.—Remains of mastodon have been reported from various places in this county, but the localities have not been very exactly defined.
In the National Museum (No. 6726) is a lower left hindermost molar of Mammut americanum which was sent by Mr. W. L. Spitler, of Tampa. Exactly where it was found is not recorded. The tooth is white and well preserved. There are five cross-crests. The cones are unusually low, and such teeth may possibly represent an undescribed species.
At Heidelberg University, Tiffin, Ohio, the writer has seen a mastodon tooth, labeled as having come from Tampa Bay. The tooth is heavy and rock-like. A part of an atlas of the mastodon is from the same place.
In the collection of Oberlin College, Oberlin, Ohio, is a lower right last molar of a mastodon, labeled as having been found at Sulphur Springs, Hillsboro County. The writer has not found where this place is situated. All of the specimens mentioned belong to Mammut americanum.
9. Alafia River, Hillsboro County.—Dr. E. H. Sellards (7th Ann. Rep. Florida Geol. Surv., p. 112, fig. 45) records the finding of an upper right last molar of Mammut americanum in this river. The tooth is unworn and has four cross-crests and a large talon. It was preserved in the collection of S. A. Robinson. With a collection of teeth of Equus found in Alafia River and preserved in the American Museum of Natural History, New York, is a single cross-crest of Mammut americanum.
20. Brewster, Polk County.—In his report of 1915 (p. 106, fig. 36) Dr. E. H. Sellards figured a fragment of a tusk, found in a phosphate mine, which he supposed might belong to Gomphotherium floridanum. He figured also a tooth (p. 104, fig. 34) which he definitely referred to this species, but it is not clear that it was found at Brewster. A list of the species found associated with the tusk will be found on page [380]. Among these species is Mammut progenium, a species ranging from the Aftonian to the Late Wisconsin. While all the species of the list are referred by Sellards to the Upper Miocene or Lower Pliocene, M. progenium appears to favor a later reference.
10. Pains Creek, Polk? County.—In the collection of the Academy of Natural Sciences, Philadelphia, is a tooth of Mammut americanum recorded as having been found on Pains Creek, 50 miles from Tampa. It appears to be a second milk molar; the length is 43 mm., the width at the second crest likewise 43 mm.
There is a Big Pains Creek in the northwestern corner of Polk County, which empties into Peace Creek. A little further south is Little Pains Creek, which empties into Peace Creek in De Soto County, near Bowling Green. On which of these the tooth was found can not be determined.