ANIMAL DENTISTRY. 



221 



Fig. 149. 

 Dental Teratoma and Conchal Fistula. 



1. Mouth of the conchal fistula. 



2. Bottom of the fistulous tract. 



3. Gubernaculum dentis. 



4. 9. Bony plates from the temporal. bone. 



5. The tooth. 



6. External auditory meatus. 



7. Wall of the fistulous tract. 



8. Petrous temporal bone. 



10. Zygoma. 



11. Temporo-maxillary articulation. 



(Williams). 



