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quadratojugal (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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quadratojugal (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) |