46 Timothy S. Young and Joshua Laerm 



Elaphe obsoleta (Say) 

 Rat Snake 

 Material— Vertebra, UGAMNH2055. 



Remarks — This material compares well with modern Elaphe 

 obsoleta which may be found in woodlands and grasslands (Conant 

 1975). 



Order Crocodilia 



Family Alligatoridae 



Alligator mississippiensis (Daudin) 



American Alligator 



Material — Left angular, UGAMNH1015; distal phalanx, 



UGAMNH1001, right dentary (without teeth), UGAMNH1012; dermal 



scutes, UGAMNH1003-1011 (1010 and 1011 exhibit crossmends), 



UGAMNH1023; right femur, UGAMNH1020, 1022; left humerus, 



UGAMNH1019; fused parietals, UGAMNH1025; left scapula, 



UGAMNH1014; right scapula, UGAMNH1016, 1018; teeth, 



UGAMNH1002, 1024, 1026, 1028, 1029; vertebra, UGAMNH1017; 



frontal, UGAMNH1013; left jugal, UGAMNH1021. 



Remarks — This material has the distinctive Alligator mississippiensis 

 morphology and it compares well with modern examples. Alligators 

 occur in both fresh and brackish waters (Conant 1975). 



CLASS AMPHIBIA 



Order Caudata 

 Family Sirenidae 

 Siren sp. indet. 

 Material— Vertebrae, UGAMNH2129-2131, 2161. 

 Remarks — The available material compares well with modern 

 Siren. 



Order Anura 

 Anura gen. et sp. indet. 

 Material— Vertebrae, UGAMNH2132-2134-right humerii. 

 Remarks — The available material, while certainly frog, could not 

 be referred to a genus or species with confidence. 



CLASS OSTEICHTHYES 



Order Lepisosteiformes 

 Family Lepisosteidae 

 Lepisosteus sp. indet. 

 Material— Scales, UGAMNH2 109-21 11. 



