File:Musculature of upper and lower Jaw in Amphiuma.jpg
![File:Musculature of upper and lower Jaw in Amphiuma.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/a/a3/Musculature_of_upper_and_lower_Jaw_in_Amphiuma.jpg/800px-Musculature_of_upper_and_lower_Jaw_in_Amphiuma.jpg?20180429233506)
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