Geological magazine . the same locality,while some other parts, especially of the dermal armour, have beenplaced in accordance with their known position in Stegosaurussteuops. The result is given in Plate XL, which is believed to representfaithfully the main features of this remarkable reptile, as far as theskeleton and principal parts of the dermal armour are figure, one thirtieth natural size, is reduced from a largerrestoration, one-tenth natural size, made for a lithographic plateto accompany the monograph of the Stegosauria, prepared by thewriter for the U. S. Geological Su
Geological magazine . the same locality,while some other parts, especially of the dermal armour, have beenplaced in accordance with their known position in Stegosaurussteuops. The result is given in Plate XL, which is believed to representfaithfully the main features of this remarkable reptile, as far as theskeleton and principal parts of the dermal armour are figure, one thirtieth natural size, is reduced from a largerrestoration, one-tenth natural size, made for a lithographic plateto accompany the monograph of the Stegosauria, prepared by thewriter for the U. S. Geological Survey. When alive, the animalwas about twenty feet in length, and nearly or quite twelve feetin height. 1 American Journal of Science, III. vol. xiv. p. 513, December, 1877. 2 Jbid. vol. xviii. p. 504, December, 1879. See, also, vol. xix. p. 253, March,1880 ; vol. sxi. p. 167, February, 1881; and vol. xsxiv. p. 413, November, 1887. DECADE III.—VOL. Till.—NO. IX. 25 Decade III. Vol. VIII, Plate XI. Geol. Mag. liestoration of Stegomurus ungulatus, M^rsh. (^„ nat. size.) A Diuosaurian Reptile from the Jurassic form£ition of Wyoining Territorj, United States, North America. 386 Prof. 0. C. Marsh—Restoration of Stegosaurus. In this restoration, the animal is represented as walking, and theposition is adapted to that motion. The head and neck, the massivefore limbs, and, in fact, the whole skeleton, indicate slow locomotionon all four feet. The longer hind limbs and the powerful tail show,however, that the animal could thus support itself, as on a tripod,and this position must have been easily assumed in consequence ofthe massive hind quarters. • In the restoration as here presented, the dermal armour is themost striking feature, but the skeleton is almost as remarkable, andits high specialization was evidently acquired gradually as thearmour itself was developed. Without the latter, many points inthe skeleton would be inexplicable, and there are still a numberthat n
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectgeology, bookyear1864
