. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Relatioxships of Stomiiporms • Fink and Weitzman 65 mesocoracoid. scapula distal radial I distal radial 4 fin rays distal radial 10 coracoid proximal radio distal rodiol 9 Figure 18. Pectoral girdle of D. taenia (USNM 206614; mm SL), dorsomedial view of the body of the cleithrum which artic- ulates with the pectoral girdle bones bearing the radials and fin rays (Fig. 18). A cross section near the mid-length of the blade-like portion of the dorsal ramus of the cleithrum is rounded anteriorly and abruptly narrower
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Relatioxships of Stomiiporms • Fink and Weitzman 65 mesocoracoid. scapula distal radial I distal radial 4 fin rays distal radial 10 coracoid proximal radio distal rodiol 9 Figure 18. Pectoral girdle of D. taenia (USNM 206614; mm SL), dorsomedial view of the body of the cleithrum which artic- ulates with the pectoral girdle bones bearing the radials and fin rays (Fig. 18). A cross section near the mid-length of the blade-like portion of the dorsal ramus of the cleithrum is rounded anteriorly and abruptly narrower posteriorly. The pos- terior blade-like portion tapers to a thin edge posteriorly. The lateral wing of the cleithrum extends from the blade-like dorsal ramus of the cleithrum, continues as the lateral blade-like portion of the body of the cleithrum and extends for- ward as the main part of the anterior blade-like part of the cleithrum (Fig. 18). The body of the cleithrum bears a mod- erate sized medial wing which extends to contact the coracoid and scapula (Fig. 18). The anterior ramus of the cleithrum is a broad dorsoventrally placed sheet of bone which is anteriorly attached by lig- aments to the cleithrum of the contralat- eral side and to the anterior coracoid ra- mus. In some stomiiforms the major liga- ments of the pectoral girdle become much modified, and for that reason par- ticular attention is paid to them here. The ligaments of the posttemporal-cranial and the posttemporal-supracleithrum articu- lations were described above. The liga- ments described below are numbered for ease of future reference. The supracleith- rum and cleithrum are bound by a broad, very short ligament (1) which extends from the ventromedial surface of the su- pracleithrum to the dorsolateral surface of the cleithrum. This joint lies somewhat ventral to the region of the cleithrum where it narrows into a conical process. Baudelot's ligament, ligament 2, ex- tends posteriorly from the anterior
Size: 1849px × 1351px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorharvarduniversity, bookcentury1900, booksubjectzoology
