. Bulletin - United States National Museum. Science. a Figure 21.—Views of left scapula, with restored anterior and vertebral borders, USNM 11976, of Pelocetus calvertensis: a, external view of left scapula; b, view of glenoid articular cavity of left scapula. Abbr.: , coracoid process. Measurements (in mm.) of the caudal vertebrae of USNM 23059 are as follows: Anteroposterior diameter of centrum Transverse diameter of centrum anteriorly Vertical diameter of centrum anteriorly Transverse diameter of neural canal Distance between ends of transverse processes Dorsal face of metapophysis to
. Bulletin - United States National Museum. Science. a Figure 21.—Views of left scapula, with restored anterior and vertebral borders, USNM 11976, of Pelocetus calvertensis: a, external view of left scapula; b, view of glenoid articular cavity of left scapula. Abbr.: , coracoid process. Measurements (in mm.) of the caudal vertebrae of USNM 23059 are as follows: Anteroposterior diameter of centrum Transverse diameter of centrum anteriorly Vertical diameter of centrum anteriorly Transverse diameter of neural canal Distance between ends of transverse processes Dorsal face of metapophysis to ventral face of centrum Second Third Fourth Ant. Post. Post. Post. Post. Ca. Ca. Ca. Ca. Ca. 162 86 65 47 41 '53 106 108 64 54 145 117 lOI 55 41 15 15 — ^ — 235+ — — — 213 — — — — Fore Limb The shoulder blade is represented by a nearly complete left scapula and the anterior and basal portions of the right. The right and left humeri and the right and left radii are unusually well preserved. The distal 220 mm. of the left ulna also was recovered during the excavation of the skele- ton (USNM 11976). The upper portion of the fore limb, comprising the scapula, humerus and radius, measured at least 39 inches (990 mm.) in length. Eleven carpal bones, nine metacarpals and nine phalanges were associated with the limb bones. Judging from the shape of the individual bones representing the manus, the paddle or foreflipper exhibited the normal flattened condition of mysticetes. The eighteen digital elements associated with this skeleton quite probably do not belong to only one flipper since eleven carpal bones were found. An estimate of the entire length of the manus calculated on the basis of what seemed to be a plausible arrangement of the recovered carpals, metacarpals and phalanges suggests that it may not have exceeded 19)^ inches (490 mm.) in length. The flipper itself would have been approximately 45 inches (1145 mm.) long. Scapula.—This broad fan-shaped scapula
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
