File:Geological magazine (1905) (14597714967).jpg

Identifier: geologicalmagazi521905wood (find matches)
Title: Geological magazine
Year: 1864 (1860s)
Authors: Woodward, Henry, 1832-1921
Subjects: Geology
Publisher: London (etc.) Cambridge University Press
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

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re complex structure of theteeth are due to progressive and not to retrogressive evolution, andsince it is impossible to suppose that some sort of quite especialchevauchement de specialisation is disturbing the whole line fromHypsilophodon to Trachodon, it is equally impossible to sustain theview that the smaller fourth trochanter represents the primary state,and on account of this I think the fourth trochanter in Hypsilophodonmay be brought forward as one of the principal arguments forsustaining my hypothesis concerning the fourth trochanter. Conclusion. The following characters in Hypsilophodon can beconsidered as new or definitely settled :—No sclerotic ring. Coro-noidal process blunt and low. The dermal predentary certainlyedentulous. Prtemaxillary with rugosity on the front end. Con-dylus basi-occipital, and the whole base of the skull very bird-like,reminding us more of some Theropoda than of the true Ornithopodidae. 1 Other arguments I intend discussing upon another occasion.
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British Dinosaurs : I. Hypsilophodon. 208 Bernard Smith—A Lepidodendroid Stem. Supra-occipital entering largely into the foramen magnum. Pro-cessus parotici not raised. Large fossa bypoparotica present.Dermal armour present and well developed. Ossified dorsocaudaltendons run along neurapophysis and chevron bones, and augmentingin number towards the end of the tail. EXPLANATION OF PAGE-ILLUSTEATION (p. 207). Fig. 1.- —Base of skull of Hypsilophodon (\). M 2.- —Back of skull of Hypi nlophodon (y). „ 3.- —Predentary of Hypsilophodon (f). „ 4.- —Mandible of Hypsilophodon (\). art. articulare. md. mandibulum. bs. basi-splienoid. mx. maxillare. CO. condylus. od. processus odontoideus. cor. coronoideum. OSS. dermal ossifications. d. denies. pd. predentary. de. dentale. p.p. processus paroticus. ep. axis (epistropheus). pt. pterygoid. exo. exoccipitale. pt.qu. processus pterygoideus quadrate. f.hp. fossa bypoparotica. qu. quadratum. f.m. foramen magnum. so. supra-occipitale. fo.

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