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Show 498 ON THE STRUCTURE OF THE THERIODONT MANDIBLE. [Apr. 19. (3) H. G. SEELEY, " On the Gomphodontia." Phil. Trans, vol. 186 (1895) B, p. 1. (4) R. BROOM, " On some new primitive Theriodonts in the S. African Museum." Ann. S. Afr. Mus. vol. iv. pt. 2, p. 147. (5) H. G A D O W , " On the Modifications of the first and second Visceral Arches, with especial reference to the Homologies of the Auditory Ossicles." Phil. Trans. vol. 179(1888). (6) J. S. KINGSLEY, "The Ossicula auditus." Tufts College Studies, no. 6, Feb. 1900. (7) E. GAUPP, " Ontogenese und Phylogenese des schallleitenden Apparates bei den Wirbeltieren." Anat. Hefte, Ergeb-nisse, Bd. viii. 1899. (8) H. G A D O W , "The Evolution of the Auditory Ossicles." Anat. Anz. Bd. xix. 1901. (9) R. B R O O M , " On the Fate of the Quadrate in Mammals." Ann. & Mag. Nat. Hist. ser. 6, vol. vi. p. 409 (1890). EXPLANATION OF PLATE XXXV. Fig. 1. Articular region and posterior part of base of skull of Cynognathus platyceps. Nat. size. Fig*. 2 & 3. Articular region of Gomphogttathus kannemeyeri-from the front. Nat. size. Fig. 4. Articulation of mandible of Cynognathus sp.-from below. Nat. size. Figs. 5 & 6. Articulation of mandible of Cynognathus sp.-from the outer side and in section. Nat. size. 7 & 8. Sections of mandible of Trirachodon kannemeyeri. Nat. size. 9 & 10. Sections of mandible of Cynognathus sp. About J nat. size. Fig. 11. Tangential section of articulation of mandible of Trirachodon kannemeyeri. Nat. size. Aug., Angular; Art., Articular; B.o., Basi-occipital; Dent., Dentary; E.o., Exoccipital ; E.M., Foramen magnum ; Ju., Jugal; Pt., Pterygoid; Qu., Quadrate; Sq., Squamosal; Surang., Surangular; Ty., Tympanic. |
