[66] H. Gadow, _Phil. Trans._, vol. 179, 1888. [67] See G. Baur, _J. Morph._, vol. I., 1887. R. Lydekker, _Catalogue of the Fossil Reptilia and Amphibia in the British Museum_, Parts I. & II. C.K. Hoffmann, _Reptilien_, in Bronn's _Classen und Ordnungen des Thierreichs_, Bd. VI., 3 abth. 1879-90. [68] T.H. Huxley, _Quart. J. Geol. Soc._, vol. XV. p. 649, 1859. R. Owen, _Catalogue of Fossil Reptiles of S. Africa in the British Museum_, London, 1876. H.G. Seeley, various papers published in the _P.R. Soc. London_, and _Phil. Trans._ [69] See pp. 281-283. [70] An ent-epicondylar foramen is one piercing the humerus on its inner side just above the condyle. [71] According to Hulke they should be regarded as the omosternum,--the clavicles and interclavicle being wanting. [72] See p. 272. [73] R. Lydekker, _Nat. Sci._ vol. I. p. 514, 1892. Further references are there given. [74] The exact position of the suture between the prefrontal and postfrontal is not known. [75] A. Günther, On the Anatomy of Hatteria, _Phil. Trans_, vol. 157, 1867, p. 595. [76] =Zygosphenes= are extra articulating surfaces borne upon the anterior face of the neural arch; they fit into corresponding structures, the =zygantra=, which are borne on the posterior surface of the neural arch of the preceding vertebra. Ordinary zygapophyses always accompany them. [77] See E.D. Cope, _P. Amer. Phil. Soc_. vol. xxx. p. 185. [78] See W.K. Parker, _Phil. Trans._ vol. 170, 1879, p. 595. [79] See p. 281. [80] Often called the columella cranii. [81] See C.K. Hoffmann, in Bronn's _Klassen und Ordnungen des Thierreichs_, Bd. VI., 3 abth. 1885-90. [82] Some anatomists consider that the closing in of the brain case in front is entirely due to the frontals and parietals. [83] E.D. Cope, _Rep. U.S. Geol. Surv._, 1875, vol. II., The vertebrata of the Cretaceous formations of the west. E.D. Cope, _P. Boston Soc._ 1862, XII. p. 250. O.C. Marsh, _Amer. J. Sci._, 1872, vol. 3. R. Owen, _Quart. J. Geol. Soc._, 1877, and 1878. [84] J.W. Hulke, _Presidential address to the Geol. Soc. of London_, 1883 and 1884. O.C. Marsh, many papers in the _Amer. J. Sci._ from 1878 onwards, also in the _Geol. Mag._ R. Owen, _History of British fossil reptiles: Dinosauria_ (Palaeont. Soc.). [85] The diagnostic characters of the different groups of Dinosaurs are in the main those given by von Zittel. [86] See O.C. Marsh, _Amer. J. Sci._ (3), vol. 48, 1894, p. 85. [87] See C.B. Brühl, _Das Skelet der Krokodiliden_, Wien, 1862. C.K. Hoffmann in Bronn's _Klassen und Ordnungen des Thierreichs_, Bd. VI. Abth. III. 1881-85. T.H. Huxley, _Proc. Linn. Soc._ (Zoology) 1860 vol. IV. p. 1. R. Owen, _History of British fossil Reptiles_. _Crocodilia_ (Palaeont. Soc.). A. Smith Woodward, _Geol. Mag._ 1885, 3rd dec. II. p. 496. A. Smith Woodward, _Proc. of Geologists' Assoc._ vol. IX. p. 288, 1886.