. The chordates. Chordata. 170 Comparative Morphology of Chordates. Fig. 363. Skeleton of Sphenodon. (AT) Atlas; (AX) axis; (C) carpal bones; (CL) clavicle; (CO) coracoid; (Dl, 2, 3, 4, 5) digits; (F) fibula; (FE) femur; (HU) humerus; (HY) hyoid; (IL) ilium; (IS) ischium; (MC) metacarpals; (MT) metatarsals; (PB) pubis; (PR) pro-atlas; (Q) quadrate; (R) radius; (SC) scapula: (SP) spinal column (points to the spinous process of one of the thoracic vertebrae): (SSC) suprascapula; (T) tibia; (TA) tarsals; (U) ulna; (UP) uncinate process. (After Headley. From Parker and Haswell: "Text-Book of


. The chordates. Chordata. 170 Comparative Morphology of Chordates. Fig. 363. Skeleton of Sphenodon. (AT) Atlas; (AX) axis; (C) carpal bones; (CL) clavicle; (CO) coracoid; (Dl, 2, 3, 4, 5) digits; (F) fibula; (FE) femur; (HU) humerus; (HY) hyoid; (IL) ilium; (IS) ischium; (MC) metacarpals; (MT) metatarsals; (PB) pubis; (PR) pro-atlas; (Q) quadrate; (R) radius; (SC) scapula: (SP) spinal column (points to the spinous process of one of the thoracic vertebrae): (SSC) suprascapula; (T) tibia; (TA) tarsals; (U) ulna; (UP) uncinate process. (After Headley. From Parker and Haswell: "Text-Book of ; By permission of The Macmillan Company, publishers.) sacral region, including, in modern reptiles, only two vertebrae; (4) the postsacral, commonly called the "caudal," region, but inaccu- rately so because its more anterior vertebrae lie within the hinder trunk region of the body and not actually within the projecting tail. The. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Rand, Herbert W. (Herbert Wilbur), 1872-1960. Philadelphia : Blakiston


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