U.S. NATIONAL MUSEUM 



BULLETIN 294, PLATE 13 



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6 



5 



4 



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11 10 



Dorsal Views of Caudal Vertebrae, USNM 23794, Thinocetus arthritus 



1 first caudal; 2, second caudal; 3, third caudal; 4, fourth caudal; 5, fifth caudal; 6, sixth caudal; 7, seventh caudal; 

 8, eighth caudal; 9, ninth caudal; 10, tenth caudal; 11, eleventh caudal. 



