. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. 340 Bulletin Museum of Comparative Zoology, Vol. 158, No. 6. Figure 36. Posterior dorsal and caudal vertebrae, partial femur and ?fibula, and tibia and phalanges of Eocaecilia micropodia (MNA V8062; stereophotographs). iable crushing and distortion of the entire series, however, substantially obscures many structural details. Only one (incom- plete) rib is preserved with the posterior dorsals; this slender rib appears compara- ble to those of other dorsals, with the cen- ters of the tuberculum and capitulum s
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. 340 Bulletin Museum of Comparative Zoology, Vol. 158, No. 6. Figure 36. Posterior dorsal and caudal vertebrae, partial femur and ?fibula, and tibia and phalanges of Eocaecilia micropodia (MNA V8062; stereophotographs). iable crushing and distortion of the entire series, however, substantially obscures many structural details. Only one (incom- plete) rib is preserved with the posterior dorsals; this slender rib appears compara- ble to those of other dorsals, with the cen- ters of the tuberculum and capitulum spaced mm apart and a shaft diameter of mm. The two vertebrae that are im- mediately adjacent to hindlimb bones are tentatively identified as sacrals. A charac- teristic sacral feature is the large size of the diapophyses, in contrast to those on posterior dorsal vertebrae that precede them (only four of which are sufficiently preserved to be useful for comparative analysis). In addition to the large size of the tubercular (diapophysial) facets, sa- crals appear to differ from posterior dorsal vertebrae in being slightly shorter in over- all length and narrower in interzygapophy- sial width. These features are preserved on the second sacral; the first sacral is largely crushed, and only posterior interzygapoph- ysial width is preserved. Sacral centra are approximately mm in length, whereas the centrum of the penultimate posterior dorsal is mm; the third vertebra ante- rior to the penultimate has a centrum length of mm. In typical dorsal verte- brae, tubercular facets are flush with the sides of the pedicles; on the putative sa- crals, tubercular facets are elevated from the lateral surface of the pedicles and are thus borne on low diapophyses. On two posterior dorsals, the transverse distance between the lateral margins of the postz- ygapophyses is mm, compared with about 1 mm on the two sacrals. Proximal caudals in MNA V8062 appear. Please note that thes
Size: 1778px × 1406px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorha, bookcentury1800, bookdecade1860, booksubjectzoology
