78 Kenneth T. Wilkins 



documents marine transgression of the Rock Springs site. The most 

 recent occurrence of a transgression sufficient to cover the Rock Springs 

 site probably corresponds to the Pamlico marine terrace (Healy 1975). 

 Hence, the minimum age estimate for this specimen is about 125,000 

 years (see Discussion). 



Family Camelidae 



Paleolama mirifica (Simpson) 1929 



Material— Deciduous P4 (V-4398); P4 (V-4453); M3 (UF 12491). 



Remarks. — Webb (1974:183) recorded this stout-legged llama as a 

 member of the Rock Springs fauna in his study of Florida Pleistocene 

 Lamini. 



Family Cervidae 



Odocoileus virginianus (Zimmermann) 1780 



Material — Right dentary with P3-M3 (V-4395); isolated cheek- 

 teeth (UF 48988-48989, V-4462); distal tibia (UF 48990); distal metatar- 

 sal (UF 48991). 



Remarks. — The white-tailed deer presently occurs throughout 

 Florida. Because of differential preservation, deer material in the Rock 

 Springs fauna appears to have been deposited during several intervals. 



Family Bovidae 



Bison sp. 



Material— Upper cheektooth (UF 10037); M3 (UF 52184); lower 

 cheektooth (UF 15065). 



Remarks. — Robertson (1974) stated that unequivocal species 

 determination for the three species of Bison in Florida can be made only 

 from horn core material. He was unable to identify diagnostic dental 

 characters, although he noted that, by its smaller size. Bison bison (Lin- 

 naeus) 1758 could sometimes be distinguished from the two larger spe- 

 cies, Bison latifrons (Harlan) 1825 and Bison antiquus Leidy 1852. 

 Mesurements of the nearly unworn lower M3(UF 52184) are: greatest 

 alveolar length = 47.7 mm, greatest alveolar width =21.2 mm, and 

 greatest crown height = 69. 1 mm. The large size of the Rock Springs M3 

 suggests the presence of one of the larger Bison species rather than B. 

 bison. 



DISCUSSION 



Chronology 



As with many late Pleistocene fluvial sites in Florida, the Rock 

 Springs local fauna accumulated during several intervals. Some material 



