. Bulletin - United States National Museum. Science. PARIETOBALAENA PALMERI 193 USNM 23203-Cervical Vertebrae Greatest vertical diameter of vtebra, tip of neural spine to ventral face of centrum Greatest anteroposterior diameter of centrum Greatest vertical diameter of centrum, anteriorly Greatest vertical diameter or neural canal, anteriorly Greatest transverse diameter of neural canal, anteriorly Greatest distance between outer ends of parapophyses Least anteroposterior diameter of right pedicle of neural arch Greatest distance between outer magins of anterior articular facets Vertical diame
. Bulletin - United States National Museum. Science. PARIETOBALAENA PALMERI 193 USNM 23203-Cervical Vertebrae Greatest vertical diameter of vtebra, tip of neural spine to ventral face of centrum Greatest anteroposterior diameter of centrum Greatest vertical diameter of centrum, anteriorly Greatest vertical diameter or neural canal, anteriorly Greatest transverse diameter of neural canal, anteriorly Greatest distance between outer ends of parapophyses Least anteroposterior diameter of right pedicle of neural arch Greatest distance between outer magins of anterior articular facets Vertical diameter of anterior articular surface Greatest vertical diameter of centrum, posteriorly Greatest transverse diameter of centrum, posteriorly Atlas Axis 104 — _ _ _ _ _ 58 50 P 25» 28» 30» 26" 26" — — 65 59 64 62 56 64 — — — — — — 44 — — — — — 150 192 — — — — _ — — 10 11 12 131 129 — — — — _ 85 72 — — — — — 45 54 65 60 62 58 131 94 77 87 76 77 78 "^Anterior epiphysis missing. '•=Both epiphyses missing. '' = Posterior epiphysis missing. the centrum is much thinner (43 mm.) than USNM 23203. This atlas also lacks a neural spine and the shape of the transverse processes is similar. Four additional cervical ver- tebrae w^ere associated with this specimen. The anterior profile of the centra of these cervicals is more rectangular and thus differs from the elliptical shape of USNM 23203. On the third cervical (fig. 95) the lower transverse process is directed outward, widened at the extremity and not bent backward; the basal portion of the combined pedicle of the neural arch and the diapophysis is narrow, noticeably less widened than on USNM 23203. The transverse pro- cesses of the fourth cervical (fig. 96) are slender and the upper process is not expanded dorsoventrally. Very slender upper and lower transverse processes are present on the fifth cervical (fig. 97); the neur
Size: 1760px × 1419px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
