St. Marks River Fauna 45 



Family Testudinidae 

 Testudinidae gen. et sp. indet. 

 Material— Osteoderms, UGAMNH1645, UGAMNH1646. 

 Remarks — These specimens represent a large tortoise, but the 

 osteoderms are not diagnostic. 



Geochelone sp. indet. 



Material— Pleural, UGAMNH1638; left hypoplastron, 

 UGAMNH1639; right pleural 2, UGAMNH1640; left pleural 4, 

 UGAMNH1641. 



Remarks — The available material, while certainly Geochelone, 

 could not be referred to a species with confidence. 



Geochelone incisa (Hay) 



Material— Right peripheral 7, UGAMNH1642; nuchal 

 UGAMNH1643; right peripheral 5, UGAMNH1644. 



Remarks — This material compares well with the series of G. 

 incisa in the collections of the Florida Museum of Natural History 

 and corresponds to Auffenberg's (1963) description. The was apparently 

 an open grassland inhabitant thought to require a frost free winter 

 (Kurten and Anderson 1980); however, Martin and Guilday (1967) 

 disagree. 



Gopherus polyphemus (Daudin) 

 Gopher Tortoise 

 Material— Nuchal, UGAMNH1637. 



Remarks — This material compares well with modern Gopherus 

 polyphemus which ranges in dry sandy soils (Conant 1975). 



Family Trionychidae 

 Trionyx sp. indet. 

 Material — Carapacial fragment, UGAMNH1761. 

 Remarks — The available material, while certainly Trionyx because 

 of the distinctive pattern on the bone, could not be referred to a 

 species with confidence. 



Order Squamata 

 Family Colubridae 

 Colubridae gen. et spec, indet. 

 Material— Vertebrae, UGAMNH2054-2061. 



