Turtles 2 9 



re-invasion of the northeast by a substantial Atlantic Coastal Plain stock that had 

 spread at least 900 km southward during the glacial advance of the late Pleis- 

 tocene. Evidence from the Ardis local fauna indicates significant shifts longitu- 

 dinally in the spatial distribution of E. blandingii along the Atlantic Coastal 

 Plain during the late Pleistocene. 



ACKNOWLEDGMENTS - We wish to express our gratitude to the staff of the 

 Giant Cement Plant, Harleyville, South Carolina, for their generous cooperation, 

 and in particular to Burt Ardis, for whom the fauna is named. Many thanks go 

 to all the field volunteers: Vance McCollum, Linda Eberle, Craig and Alice 

 Healy, Derwin Hudson, Ray Ogilvie, Lee Hudson, Tom Reeves, Martha Bentley, 

 and Karin Knight. Robert Weems, U.S. Geological Survey, and Peter Meylan, 

 Eckerd College, Petersburg, Florida, provided helpful discussion and review of 

 this manuscript. We also wish to express our appreciation to Overton Ganong of 

 the South Carolina State Museum; David Webb, Gary Morgan, and David Auth, 

 of the Florida Museum of Natural History; Dennis Hermann, of Zoo Atlanta; and 

 Greg Schneider, Museum of Zoology, The University of Michigan, and Justin 

 Cougdon, Savannah River Ecology Labratory, Aiken, South Carolina, for allow- 

 ing us access to their collections. Thanks go to Mike and Debi Trinkley, the 

 Chicora Foundation, Columbia, South Carolina, for the use of their field equip- 

 ment, and to Mike Runyon of Lander College, Greenwood, South Carolina, for 

 donating fossil material for C14 dating. Darby Erd provided the illustrations. 



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