Ectotympanic
The ectotympanic, or tympanicum, is a bony ring in the tympanic part of the temporal bone that holds the eardrum, or tympanic membrane.[1] Its position and attachment to the skull vary within mammals, and particularly primates, and can be either inside or outside the auditory bulla.[2][3]
It is homologous with the angular bone.
References
External links
- webref: Anthropology
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