10 



Curtis C. Bentley and James L. Knight 



Fig. 3 Right parietals of Macroclemys temminckii and Chelydra serpentina. A) 

 Recent M. temminckii. B) Ardis fossil. C) Recent C. serpentina. 



3 cm 



(.1 10.13-.1 10.14); 2 dorsal vertebrae (.1 10.9-. 1 10.10); complete pelvic girdle 

 (.110.15); 1 caudal vertebra (.110.8). An individual specimen consisting of a 

 nearly complete carapace and plastron (.111). An individual specimen consist- 

 ing of a complete carapace (missing left 8-9th peripherals and 6th neural) and 

 plastron (.112); partial skull and mandible (.112.1); partial hyoid process 

 (.11 2.2); 7 cervical vertebrae (.112.20-. 11 2.26); 2 humeri (.11 2.5-. 11 2.6); 2 ulnae 

 (.112.7-.112.8); 2 radii (.112.9-. 112. 10); 2 scapulo-acromial processes (.112.15- 

 .112.16); 2 coracoids (.112.17-.112.18); 2 femora (.112.3-.112.4); 2 tibiae 

 (.112.11-.112.12); 2 fibulae (.112. 13-. 112. 14); 7 metapodial elements (.112.42- 

 .112.48); 31 phalanges (.112.49-. 112-80); 13 unguals (.112.81-.112.91); 2 sacral 

 ribs (.112.92-. 112.93); partial pelvic girdle (.112.19); 3 dorsal vertebrae (.112.27- 

 .112.29); 12 caudal vertebrae (.112.30-. 11 2.41). An individual specimen con- 

 sisting of a nearly complete plastron and attached 4-7th right peripherals (.113); 

 skull (including inner ear ossicles) and mandible (.113.1); partial hyoid appara- 

 tus (.113.2); 4 cervical vertebrae (.113-.9-.113.12); 2 humeri (.113.3-.113.4); 1 

 scapulo-acromial process (.113.7); 2 partial femora (.11 3.5-. 11 3.6); 1 tibia 

 (.113.8); 2 metapodial elements (. 1 1 3. 15-. 1 13. 16); 15 phalanges (.113.17- 

 .113.31); 5 unguals (1 13.32-. 1 13.36); 2 caudal vertebrae (. 1 13. 13-. 1 13. 14). 

 Specimen with partial carapace (.114); 3 cervical vertebrae (.114.3-. 114.6); 1 



