NO. 1666. 



OSTEOLOGY OF CAMPTOSAURUS—GILMORE. 



203 



out reward. It appears remarkable that in a skeleton which shows 

 so little displacement of the elements as this one, that the heavy 

 bones of the hind limbs should be missing. An unusual feature is 

 the preservation of both fore limbs and feet. Experience of several 

 seasons' field work has shown that while it is not unusual to find 

 hind limbs fairly complete, the front legs, particularly of the Jurassic 

 saiiropods, are rare. 



B}^ reference to the quarry map (see Plate G), all of the evidence 

 as to the association of the parts nuiy be plainly seen. The bones not 

 numbered pertain to one or more genera different from Campto- 

 saurus. The series to the east of the vertebral column represents a 

 caudal series of /Stegosaurus, and most of the other scattered elements 

 have been recognized as belonging to that genus. With the exception 

 of two caudal vertebra', no duplicate bones of Camptoscuonis have 

 been found. There can be therefore little question but that all of 

 the elements indicated as Camptosaurus belong to the one individual. 



The position of the bones of the skeleton, as found in the quarry, 

 is shown in diagrams 5 and 7, Plate 6. The position of the different 

 parts is indicated by the original quarry numbers as follows : 



In Diaoram 5. 



81. Dorsal rib. 129 



83. Dorsal rib. 134 



84. Left liumerus. 



85. Left radius, ulua, and manus. 140. 

 98. Spinous process. I57. 



101 to lOG. Dorsals (2, 3, 4, 5, 6, and 7 15s. 



of series). I59. 



106. Thoracic rib. 167. 



107. Head of dorsal rib. 168. 

 109. Piece of dorsal rib. I69. 

 113. Portion of right ischium. 170 



115. Left ischium. 



116. Dorsal rib (portion of head). I75 

 120 to 128. Dorsals (8th to 16th of 173' 



series). 



to 133. Sacrals. 



to 136. Cauda Is (1, 2, and 3 of 



series). 



Left ilium. 

 Portion of dorsal rib. 

 Caudal (6th of series). 

 Caudal (5th of series). 

 Right ilium. 

 Caudal (3rd of series). 

 Caudal (4th of series), 

 to 174. Caudals (7, 8, 9, 10, 11, and 



12 of series). 

 176. Caudal vertebrse. 

 Chevron. 



In Diagram 7. 



45. Left scapula. 



46. Left coracoid. 



76. First dorsal. 



77. Ninth cervical with one rib. 



78. Eighth cervical with both ribs. 



83. Seventh cervical. 



84. Right humerus. 

 98. Right coracoid. 



101. Right scapula. 



109. Fourth cervical. 



119. Right radius and ulna. 



120. Right manus. 



177. Ungual of Digit IV, right hind 



foot. 

 208. Caudals (13, 14, 15, and 16 of 



series). 

 218 to 235. Caudals (21st to ,38th of 



series). 



