Fifi.XXl 



Fig. XX 



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Fi0. XXII 



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S.T.LUCM &C° i/!«, 



XX. Mandible of Ctenodus. imbricaLus Inner surface. NaL. size. 



XXI. „ C.obliquus. outer surface 



XXII. Articular bone of Ctenodus. NaL size. 



