U.S. NATIONAL MUSEUM 



BULLETIN 294, PLATE 4 



nuni. 



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13 



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Metacarpals, Phalanges and Carpals, USNM 23794, Thinocetus arthritus 



1, second right metacarpal; 2, third right metacarpal; 3, fourth right metacarpal; 4, fourth left metacarpal; 5, first right 

 metacarpal; 6, right phalange; 7, right phalange; 8, right phalange; 9, right phalange, first digit; 10, left phalange, first 

 digit; 11, distal epiphysis of right radius; 12, distal epiphysis of right ulna; 13, right radiale; 14, right intermedmm; 15, 

 right ulnare; 16, right trapezoid; 17, right centrale; 18, right unciform or magnum. 



