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Quadratojugal

Quadratojugal
The quadratojugal is a small jaw bone that is present in most amphibians, reptiles, and birds, but has been lost in mammals. It is connected to the jugal as well as other bones, though these may vary with species.

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Last updated on Thursday June 12, 2008 at 08:02:32 PDT (GMT -0700)
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