| 11. | They also developed an enlarged blade-like lower premolar.
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| 12. | There were originally four premolars in each quadrant of early mammalian jaws.
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| 13. | The anterior upper premolars are larger and sharper relative to other cats.
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| 14. | They have no canines and premolars are backwards-curving and flat.
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| 15. | Maxillary first premolars and mandibular molars usually have two roots.
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| 16. | Premolars are found distal to canines and mesial to molars.
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| 17. | The maxillary 1st premolar is also bifurcated with two roots.
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| 18. | All horses have 12 premolars, 12 molars, and 12 incisors.
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| 19. | A second premolar has been lost in all catarrhines.
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| 20. | The profiles of the molars are more rounded than those of the premolars.
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