. Bulletin. Natural history; Natuurlijke historie. ns. c m FIG. 34. Posterior (11th?) dorsal vertebra of Deinonychus antirrhopus, YPM 5210, in left lateral (A), posterior (B) and dorsal (C) views. The parapophysis is still well below the level of the diapophysis, so this probably is not one of the last presacrals. Notice, however, the well-devel- oped hyposphene, the expanded summit of the neural spine and the enlarged interspinous liga- ment scar. Abbreviations: dp—diapophysis; hy—hyposphene; li—scars of attachment for the interspinous ligament; ns—neural spine; pi—pleurocoel; po—postzygapoph
. Bulletin. Natural history; Natuurlijke historie. ns. c m FIG. 34. Posterior (11th?) dorsal vertebra of Deinonychus antirrhopus, YPM 5210, in left lateral (A), posterior (B) and dorsal (C) views. The parapophysis is still well below the level of the diapophysis, so this probably is not one of the last presacrals. Notice, however, the well-devel- oped hyposphene, the expanded summit of the neural spine and the enlarged interspinous liga- ment scar. Abbreviations: dp—diapophysis; hy—hyposphene; li—scars of attachment for the interspinous ligament; ns—neural spine; pi—pleurocoel; po—postzygapophysis; pp—parapophy- sis;; pr—prezygapophysis. articular facet for the capitulum. These project prominently to the side below and anterior to the transverse processes. Gilmore (1920: p. 41) notes that the transverse processes of the dorsals in Allosaurus gradually lengthen and assume a more horizontal and directly trans- verse orientation, as one progresses from front to back. These are contrary to the conditions in Deinonychus. The transverse processes of all dorsals extend outward, up and back, at approximately the same orientation throughout the series and the length appears to be more or less uniform in all 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 Peabody Museum of Natural History. New Haven : The Museum
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