. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. 244 Prof. H. G, Seeley on the Ornithosaurian Pelvis. and completed symmetrically, it will be found that then- expansions extend laterally far beyond the ilium, showing that they were inclined to each other. Their stalk articular ends might be in contact with the proximal ends of the pubes so far as this specimen is concerned. Specimens which expose the ventral surface of the pelvis have the prepubic bones often parallel to each other and their stalks separated by a width which
. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. 244 Prof. H. G, Seeley on the Ornithosaurian Pelvis. and completed symmetrically, it will be found that then- expansions extend laterally far beyond the ilium, showing that they were inclined to each other. Their stalk articular ends might be in contact with the proximal ends of the pubes so far as this specimen is concerned. Specimens which expose the ventral surface of the pelvis have the prepubic bones often parallel to each other and their stalks separated by a width which would not be less than that between the pubic bones. This may be seen in Quenstedt's figure of (Pt.) Cycnorhamphus suevicus (' Ueber Pterodactylus suevicus &c.,' Tubingen, 1855) and in Fraas's figure of Rhamphorhynchus suevicus (Jahreshefte Vereins vaterl. Natur. Wiirttem. xi. T. ii. 1855); and, on the whole, specimens which show a lateral aspect of the pelvis commonly have the stalk of the bone in a superior position, though exceptions occur, as in the type of Pterodactylus longirostris, in which the bone is dis- placed ventrally. An instructive lateral aspect of the pelvis is seen in the Stuttgart specimen, no. 5802, from the Lithographic Slate of Nusplingen (fig. 3), which is figured by Fraas in the'Palgeon- tographica ' (N. F. v. 4 (xxv.), T. xxii.) as Pterodactylus suevicus of Quenstedt. A cursory examination shows it not Fiar. Pelvis of Cycnorhamphus Fraasii (posterior angle of ischium restored). to belong to that species, even if it belongs to the same genus, for the prepubic bones are of dissimilar forms and proportions to those of Cycnorhamphus suevicus. It moreover has the acetabulum much larger. The humerus, ulna, and radius, femur, tibia, and fibula are all relatively longer in the Stutt- gart specimen, without a corresponding elongation of the wing phalanges; and therefore I shall speak of this specimen as. Please note that these images are extracted from
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